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1 | Product Model | Introduction | ||||||||||||||||||||||||
2 | Internal Model Number: HT01 Sales Model Number：HAYLOU Flowbuds N55 | 这款耳机搭载 12.4mm 大动圈单元且通过 Hi-Res 认证，具备全时自适应 ANC 降噪，降噪深度达到-54dB、6 麦 ENC 高清通话降噪及 10m/s 抗风噪能力；采用蓝牙 6.0，支持智能佩戴检测、专属 APP 个性化调节，单次续航 12h、总续航 40h；配备 4 副不同尺寸抗菌耳帽，拥有 IPX5 级防水性能，充电盒双工艺设计更显质感。 | ||||||||||||||||||||||||
3 | Level I | Level II | Level III | Level IV | Q:Detailed and specific questions | A: Solution Answer | Attached Figure | Attached video | ||||||||||||||||||
4 | HT01 Earphone | Hardware | Headphone Firmware | Power on / Pair | 1. How do I power on and pair the headphones? | Power on upon opening the case 1. First time use: After opening the case, the LED will light up for 3 seconds (the light color depends on the current battery level) and then enter pairing mode. The green LED will flash continuously (frequency 250ms). Select "HAYLOU Flowbuds N55" in your phone's Bluetooth list and click to pair; 2. Already paired: The next time you open the case, the earbuds will automatically reconnect to the most recently connected device; | ||||||||||||||||||||
5 | HT01 Earphone | Hardware | Headphone Firmware | Power on / Pair | 2. How do I force the phone into pairing mode to connect to another phone? | 1. If there is a pairing record already, open the case with both earbuds inside, press and hold the button on the charging case for 3 seconds, 2. The green light on the charging case will flash quickly, The earbuds will enter pairing mode, then search HAYLOU Flowbuds N55 on another phone to pair. | ||||||||||||||||||||
6 | HT01 Earphone | Hardware | Headphone Firmware | Power on / Pair | 3. How do I clear the pairing records? | Place both earbuds into the charging case and keep the case open. Press and hold the button on the charging case for 8 seconds to clear all pairing records. The LED light in the charging case will flash red 3 times to complete the reset. | ||||||||||||||||||||
7 | HT01 Earphone | Hardware | Headphone Firmware | Power on / Pair | 4. How do I restore my headphones to factory settings? | Place both earbuds into the charging case and keep the case open. Press and hold the button on the charging case for 15 seconds to clear all pairing and TWS grouping records. The LED light on the charging case will stay on for 3 seconds to complete the reset. | ||||||||||||||||||||
8 | HT01 Earphone | Hardware | Headphone Firmware | Noise Cancellation | 1. How do I switch noise cancellation modes? | Press and hold the MFB button on the left/right earphone for 2 seconds to switch modes. The switching sequence is: ANC ON → ANC OFF → Passthrough. The mode cycles through these modes, and a corresponding prompt tone will be played each time you switch. | ||||||||||||||||||||
9 | HT01 Earphone | Hardware | Headphone Firmware | Noise Cancellation | 2. How do I enable adaptive noise cancellation? | After successfully connecting your phone and headphones, open the Haylou Sound APP, find the "Adaptive Noise Cancellation" option in the APP and turn it on. Once turned on, there will be a dedicated prompt sound. The headphones will monitor the environment in real time and adjust the noise cancellation intensity accordingly. | ||||||||||||||||||||
10 | HT01 Earphone | Hardware | Headphone Firmware | Noise Cancellation | 3. What if the noise reduction effect is poor/no noise reduction effect? | 3.1 Confirm that you have switched to ANC ON/Adaptive Noise Cancellation mode. When wearing the headphones, the ear tips must fit snugly in the ear canal without sound leakage (it is recommended to use 4 different sizes of antibacterial ear tips for a better fit); 3.2 Clean the headphone's sound outlet (gently sweep with a soft brush) to prevent foreign objects from blocking the seal and affecting the sound. 3.3 Keep away from environments with electromagnetic interference (such as subway stations or computer rooms), as these environments can interfere with the noise cancellation signal; 3.4 Restart the headphones or reconnect the device. If the problem persists, restore factory settings. If the issue remains, contact customer service. | ||||||||||||||||||||
11 | HT01 Earphone | Hardware | Headphone Firmware | sound quality | 1. How to enable Hi-Res high-resolution audio/LDAC decoding? | 1.1 Hi-Res Audio quality is supported by default, requiring playback of 96kHz/24bit high-resolution audio files (transmission rate up to 990kbps), enhanced bass performance with dynamic bass algorithm; 1.2 LDAC decoding is disabled by default at the factory, only supported by Android phones (the phone must also support LDAC): After connecting, open the Haylou APP and enable LDAC. The changes will take effect after the headphones restart. Go to your phone's settings → Bluetooth → Headphone Name → Audio Encoding, select "LDAC", and it is recommended to set it to "Emphasis on Audio Quality (990kbps/909kbps)". | ||||||||||||||||||||
12 | HT01 Earphone | Hardware | Headphone Firmware | sound quality | 2. What to do if the headphone sound is muffled/lacking in bass? | 2.1 Clean the earphone vents and ear tips to remove earwax and dust, ensuring unobstructed sound transmission; 2.2 Open the Haylou Sound app, select the "Bass Boost" preset in "Personalized Sound Effects," or customize the EQ (frequency response range 20-20kHz); 2.3 Confirm that your phone's decoding method is AAC/LDAC (Android), avoiding the use of only SBC decoding (the default encoding), as SBC encoding offers weaker sound quality. | ||||||||||||||||||||
13 | HT01 Earphone | Hardware | Headphone Firmware | Touch | 1. What are the functions of the touch control buttons on the headphones? | Default touch controls on the headphones: 1. Double-tap MFB: Play/Pause music, answer/hang up calls; 2. Triple-tap left earbud MFB: Previous track; 3. Triple-tap right earbud MFB: Next track; 4. Long press L/R for 2 seconds: Switch noise cancellation mode; Call mode: 1. Long press L/R for 2 seconds: Reject call. 2. Double-tap L/R: Answer/hang up. Touch controls must be worn while the headphones are in operation. Custom settings can be configured in the app. | 共享盘中有操作指导视频（预计下周五前上传） | |||||||||||||||||||
14 | HT01 Earphone | Hardware | Headphone Firmware | Touch | 2. What to do if the touch buttons are unresponsive? | 2.1 Ensure the earphones are properly fitted and the touch area is free of sweat and dust. 2.2 Gently wipe the earphone touch surface to keep it dry and clean. 2.3 Restart the earphones or restore factory settings to rule out firmware issues. 2.4 Avoid excessive pressure on the touch area while wearing the earphones. If the problem persists, contact customer service. | ||||||||||||||||||||
15 | HT01 Earphone | Hardware | Headphone Firmware | Battery life / charging | 1. How long does it take to fully charge the earbuds and charging case? How long is the battery life? | 1. The earbuds take approximately 1.5 hours to fully charge on a single charge; 2. The charging case takes approximately 2.5 hours to fully charge; 3. With ANC OFF, the earbuds offer 12 hours of battery life on a single charge, with a total battery life of 40 hours; with ANC ON, the earbuds offer 10 hours of battery life on a single charge, with a total battery life of 35 hours; 4. A low battery warning sound will play every 5 minutes when the earbud battery level drops below 5%. | ||||||||||||||||||||
16 | HT01 Earphone | Hardware | Headphone Firmware | Battery life / charging | 2. What should I do if the earphone charging case is not charging / the charging indicator light is not on? | 2.1 Check if the Type-C charging cable is making good contact with the charging port. Replace with an original charging cable and a 5V/1A standard charger (avoid using fast charging adapters); 2.2 Wipe the charging case contacts and earphone charging contacts with an alcohol swab to remove dust and oxidation; 2.3 The charging case will not show an indicator light when the battery is depleted. A red light will illuminate after 5 minutes of charging, indicating normal charging; 2.4 If it still does not charge, the charging case's motherboard may be faulty. Contact after-sales service for inspection. | ||||||||||||||||||||
17 | HT01 Earphone | Hardware | Headphone Firmware | Battery life / charging | 3. What should I do if my headphones drain the battery quickly/have shorter battery life? | 3.1 Disable high-power functions: LDAC decoding, adaptive noise cancellation, and low-latency gaming mode to reduce power consumption; 3.2 Disconnect Bluetooth connections from idle devices to avoid multiple devices being connected to the headphones in the background simultaneously; 3.3 Lithium batteries experience reduced battery life in environments outside of -10℃ to 45℃; avoid use in extreme temperatures; 3.4 Restore factory settings to rule out firmware malfunctions causing excessive power consumption. If the problem persists, contact after-sales service to check battery health. | ||||||||||||||||||||
18 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Bluetooth connection | 1. What to do if the connection between the headphones and the phone is unstable/frequently disconnects? | 1.1 Ensure the headphones and phone are within 10 meters of each other, with no walls, metal objects, or other obstructions (Bluetooth 6.0 has a 360° unobstructed transmission range); 1.2 Turn Bluetooth off and on again on your phone, or restart the headphones (remove them from the case after 10 seconds), or restart your phone; 1.3 Clear the pairing history between the headphones and phone, then re-pair and connect; 1.4 Update the Bluetooth driver for Android phones and update the iOS system for Apple phones to ensure compatibility. | ||||||||||||||||||||
19 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Bluetooth connection | 2. How do I enable dual-device connection? | 1. Turn on the dual-device connection switch in the app. After the earbuds power on, they will enter pairing mode. Pair with the first device through the Bluetooth menu. 2. Then turn off Bluetooth on the first device. In the Bluetooth menu of the second device (phone, computer, tablet, etc.), find the device name "HAYLOU Flowbuds N55" and tap to pair. 3. After successful pairing, the earbuds are now connected to the second device. 4. Turn on Bluetooth on the first device. The earbuds are now connected to both devices simultaneously. Note: Dual-device connection is disabled by default and must be enabled in the app. It is also mutually exclusive with LDAC codec. | ||||||||||||||||||||
20 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Bluetooth connection | 3. How to reconnect the headphones after they disconnect due to excessive distance? | 3.1 If the earbuds disconnect after exceeding the range, they will automatically reconnect to the phone if you move back into the connection range within 6 minutes. 3.2 If the earbuds disconnect after 6 minutes, they will automatically power off. You will need to open the case, power them on, and reconnect. | ||||||||||||||||||||
21 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Function settings | 1. How do I customize headphone sound effects? | After successfully connecting the headphones to the Haylou Sound app: In "Personalized Sound Effects," select a preset sound effect (such as Pop, Rock, Classical), or manually adjust the EQ equalizer to customize the frequency response curve; | ||||||||||||||||||||
22 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Function settings | 2. How to customize the noise reduction depth? | In the Haylou Sound APP, go to "ANC Settings" to select noise cancellation modes and freely combine 5 levels of noise cancellation depth to adapt to different scenarios. | ||||||||||||||||||||
23 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Function settings | 3. How do I enable low latency mode in the game? | 3.1 Low latency mode is disabled by default. After connecting your phone and headphones, open the Haylou Sound APP; 3.2 Find and enable the "Game Low Latency" option. Enabling it improves audio-visual synchronization, making it suitable for competitive games; 3.3 Low latency mode will automatically disable when this mode is turned off or when the headphones are placed back in the case and powered off. | ||||||||||||||||||||
24 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | OTA | 4. How to upgrade the headphone firmware (OTA)? | 【Solution】 1. Prerequisites: The earphones are connected to the Haylou APP, the earphone battery is ≥ 50%, and the mobile network is stable. 2. Trigger: The APP will automatically detect updates, or you can manually go to "Device Settings → More Settings → Firmware Upgrade". 3. Operation: Click "Update Now". Do not use the earphones during the upgrade process; wait for it to complete. 【Additional Notes】 Upgrade Logic: Connecting the earphones to the APP with the charging case open or connecting them to the APP while the earphones are outside the charging case will trigger the upgrade. The earphones must be placed in the charging case during the upgrade. Note: Do not disconnect or operate the device during the upgrade. If the upgrade fails, try restoring factory settings or contact customer support. | ||||||||||||||||||||
25 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Function settings | 5. How do I restore factory settings in the app? | In the app, tap Settings in the top navigation bar → More settings → Factory reset | ||||||||||||||||||||
26 | HT01 Earphone | Software | Hayou Sound APP in mobile phone | Function settings | 6. How do I clear device pairing records in the app? | In the app, tap Settings in the top navigation bar → More settings → Clear device pairing history | ||||||||||||||||||||
27 | HT01 Earphone | Hardware | Electronic/Structural Function | call | 1. What should I do if the other party can't hear me clearly/there is static/there is a lot of wind noise during a call? | 1.1 Ensure the headphones fit snugly with the microphone unobstructed, and adjust the headphone angle/pickup point appropriately towards your mouth; 1.2 The headphones feature 6-microphone ENC call noise reduction + 10m/s wind noise reduction algorithm, automatically filtering wind noise during cycling/in windy conditions; 1.3 Clean dust from the headphone microphone hole (MEMS microphone) with a soft brush to prevent blockage; 1.4 Keep away from areas with strong electromagnetic interference (such as routers and induction cookers), as these environments can cause call noise. | ||||||||||||||||||||
28 | HT01 Earphone | Hardware | Electronic/Structural Function | Wearing | 1. What should I do if my headphones keep falling out or my ears feel sore? | 1.1 Four pairs of antibacterial ear tips in different sizes are included. Change the size to fit your ear canal for a secure and pressure-free fit. 1.2 Adjust the earphone angle so that the ear tips are fully inserted into the ear canal and fit snugly against the auricle. 1.3 Avoid prolonged wear. Remove the earphones every 1-2 hours to rest and relieve ear pressure. | ||||||||||||||||||||
29 | HT01 Earphone | Hardware | Electronic/Structural Function | Wearing | 2. How to clean/replace ear caps when they get dirty? | The antibacterial ear caps are detachable. They can be washed with warm water and a neutral detergent (such as soapy water), dried, and reused. Avoid contact with organic solvents such as alcohol and disinfectants (which will corrode the material). | ||||||||||||||||||||
30 | HT01 Earphone | Hardware | Electronic/Structural Function | In-ear detection | 1. What should I do if the smart in-ear detection fails (plays not when in ear / plays continuously when out of ear)? | 1.1 Confirm that the "Smart In-Ear Detection" function is enabled in the Haylou Sound APP; 1.2 Wipe the in-ear detection sensor area of the earphone with a soft cloth, ensuring it is clean and free of sweat and dust; 1.3 Put the earphone back on, ensuring the sensor fits snugly against the ear canal skin (in-ear detection requires skin contact to trigger); 1.4 Restart the earphone or restore factory settings. If the problem persists, contact after-sales service to have the sensor checked. | ||||||||||||||||||||
31 | HT01 Earphone | Hardware | Electronic/Structural Function | water proof | 1. Are the headphones waterproof? What precautions should I take during daily use? | 1. The headphones are IPX5 waterproof, capable of withstanding daily sweat and rain splashes; 2. Caution: Do not immerse in water, do not use while showering/swimming, and avoid contact with seawater and corrosive liquids; 3. If water gets inside, immediately wipe the surface of the headphones dry and allow them to air dry naturally. Do not use a hairdryer to bake them at high temperatures. | ||||||||||||||||||||
32 | HT01 Earphone | Hardware | Packaging / Headphone Appearance | Material / Cleaning | 1. How to clean and maintain earphones/charging case? | 1.1 The earphone shell uses NCVM vacuum plating technology. Gently wipe with a dry, soft cloth to avoid scratching the metallic surface. 1.2 The charging case uses excimer spraying technology, which is stain-resistant and wear-resistant. Wipe with a slightly damp, soft cloth to remove fingerprints and stains. 1.3 When not in use, place the earphones in the charging case and store them in a dry, cool environment (avoid direct sunlight and high-temperature baking to prevent material aging). | ||||||||||||||||||||
33 | HT01 Earphone | Hardware | Packaging / Headphone Appearance | Accessories | 1. What accessories are included with the headphones as standard? | Standard package includes: earbuds, charging case, Type-C charging cable *1, antibacterial ear tips (4 pairs, S/M/L/XL), and instruction manual *1; | ||||||||||||||||||||
34 | HT01 Earphone | Hardware | Troubleshooting | Common Faults | 1. What to do if there is no sound from the headphones / no sound from one ear? | 1.1 Confirm the earbuds are connected to the phone, the phone volume is on and not muted, and test by adjusting the earbud volume control. 1.2 Check if the earbud vents are blocked by earwax or dust; clean them and try again. 1.3 No sound from one earbud: Place both earbuds in the charging case, close the lid for 10 seconds, then open the lid and remove them to trigger TWS automatic pairing (resolves master/slave earbud connection issues). 1.4 Restore factory settings or restart the device. If the problem persists, contact after-sales service to have the speaker unit inspected. | ||||||||||||||||||||
35 | HT01 Earphone | Hardware | Troubleshooting | Common Faults | 2. What should I do if my headphones have a static/noise issue? | 2.1 Rule out audio source issues: Try different music/video files to confirm if the problem lies with the audio itself; 2.2 Keep away from devices with strong electromagnetic interference (such as routers and induction cookers), as these environments can cause abnormal signal transmission; 2.3 Turn off LDAC decoding and switch to AAC/SBC decoding for testing (LDAC decoding compatibility is poor on some phones); 2.4 Restore factory settings. If noise persists, record an audio sample and contact after-sales service for inspection (to rule out speaker malfunction). | ||||||||||||||||||||
36 | HT01 Earphone | Hardware | Troubleshooting | Common Faults | What should I do if my headphones cannot connect to the app/the app is unresponsive? | 3.1 Confirm your phone's operating system version is compatible (Android 9.0+/iOS 13.0+), and update the Haylou app to the latest version; 3.2 Close and reopen the app, or restart your phone's Bluetooth; 3.3 Clear the app cache (Android: Settings → Apps → Haylou app → Storage → Clear cache; Apple: Uninstall and reinstall); 3.4 Disconnect the headphones from your phone's Bluetooth connection, re-pair them, and then connect to the app again. | ||||||||||||||||||||
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