HIFIMAN TWS888 True Wireless HiFi Earphones User Manual

Bluetooth Headset
User Manual

FCC ID：2BALT-TWS888
Model:TWS888
Brand:HIFIMAN
Manufacturer:Shenzhen Roman Technology Co., Ltd
Address:Suite 201, No.7 Building, 66 Tongli Road, Tongxin Community, Baolong, Longgang
District, Shenzhen City, China

Welcome

Thank you for choosing our products. Our bluetooth headset has a stylish design, powerful functions, and high compatibility, which can provide you with a hands-free experience while making calls and listening to music. It is the best choice for office use, outdoor activities and driving.

Bluetooth Wireless Technology

With the Bluetooth wireless technology, you can connect the earphone to its compatible communication devices without using cables. The Bluetooth wireless connection allows you to use a cell phone without holding it against the earphone, but the maximum distance between them cannot exceed 10 meters (about 30 feet). The Bluetooth wireless connection may be interfered by obstacles (such as walls) or other electronic devices.
In some areas, use of the Bluetooth wireless technology may be subject to some constraints. Please consult your local authority or service provider for details.
Please fully charge the headset before use (refer to the Charging Instructions section of this book for charging instructions). Select a mobile phone or other Bluetooth terminal device compatible with the headset for pairing (refer to the Basic Operations for the pairing method).
Tips: Do not use credit cards or other magnetic storage media close to the headset to avoid losing storage information due to degaussing.
Bluetooth headset pairing and connection method (Note: Take Apple mobile phone as an example)
For the convenience of user operation, the left and right stereo sound interconnection pairing settings between the two
Bluetooth headsets have been completed before you purchase this product!
● Dual-ear mode: Initial use of headsets

1. Take out both left and right earphones from the charging box when using it for the first time. Put both earphones back into the charging box. The two earphone indicator lights is on. The headset is activated.
2. Open the cover of the charging box. Take earphone out from the charging box. The headset is automatically powered on and enters pairing status, with a prompt tone when completing the TWS pairing.
3. Turn on the phone’s Bluetooth and search for Bluetooth headset devices. After finding the Bluetooth headset, click Pair to complete the connection.

Basic Operations

it will automatically turn on and the TWS connection is successful. The main earphone will enter the pairing state with a white light flashing quickly for about 5 minutes, and it will automatically shut down after the pairing timeout. (Note: In the power-on state, do not connect the Blue tooth device, when the noise reduction is turned on, the headset will keep the noise reduction working state after the pairing timeout for 5 minutes, until the power is low and automatically shut down)
connect| LED
| Open the charging box and take out the earphones (L) and earphones ((R) at the same time.
After the TWS is automatically paired successfully, the main ear will enter a white light flashing state, and the secondary ear LED will flash once every 2 seconds. The mobile phone searches for the pairing name, click to connect, success Connection will beep
answer the call| When there is an incoming call, touch the earphone (L) or earphone ((R) twice in succession to
answer the call, accompanied by a “beep” tone
call rejection| When there is an incoming call, long touch the earphone (L) or earphone (R) for 2 seconds to
reject the call, accompanied by a “beep” tone
hang up the phone| During a call, touch the earphone (L) or earphone (R) twice in succession to hang up the call,
accompanied by a “beep” tone
Music play/pause| When the headset is playing music, touch the headset (L) or headset ((R) twice in a row to
pause the song, and repeat the operation to play the song
Noise reduction mode/transparency mode| When the headset is turned on for the first time, it is in normal mode. Long touch the headset (L) or headset (R) for 2 seconds to turn on noise reduction, accompanied by a prompt tone. Noise mode, cycle in turn)
Turn off noise reduction| Four-touch earphones (R) turn off noise reduction, accompanied by a beep
Automatically connect back| After powering on, the headset will first actively reconnect to the last paired device
game mode| In standby/music state, the four-touch headset (L) turns on the game mode, accompanied by a prompt sound, repeat the operation to turn off the game mode
previous piece| Three-touch earphone (L)
next track| Three-touch earphone (R)
Manual boot| Press and hold for 3 seconds
Manual shutdown| Press and hold for 8 seconds
IOS battery level display| The battery level of the headset can be displayed after connecting to the IOS system
reset| In the power-on state, the six-touch earphone (L) and earphone ((R), the earphone will be turned off
LED display status|
Power on pairing| The white LED of the main ear flashes quickly, and the LED light of the auxiliary ear flashes once every 2 seconds
connected standby| The main and auxiliary earphone LEDs flash every 5 seconds
calling| LED off
listen to music| LED off
charging| White LED is always on
finished charging| White LED off
Low voltage alarm| The white LED flashes once every 5S, accompanied by a prompt tone, and prompts once every 5 minutes until it is turned off

Charger and Battery

Before using any charger to charge this earphone, check whether the specifications of the charger meet requirements. The recommended output voltage of the charger is DC5V+/-0.25V, and the recommended output current is 100 mA to 500 mA. An over-high charging voltage may damage the earphone.
Warning: Use the recommended charger whenever possible. Use of other types of chargers may violate the warranty terms of the equipment and results in danger. If the charging cable is delivered with the earphone, connect the cable to a CCC-certified charger or computer to charge the earphone.
Charging the Battery
The earphone use embedded charging battery that cannot be removed. Do not attempt to remove the battery from the earphone or the charging box; otherwise, the earphone may be damaged. If the earphone is not used in a long time, keep it in a cool and well-ventilated place, and charge the earphone once every two months.

Troubleshooting

sure the headset is not out of battery.
If the headset is out of battery, please charge it for more than 30 minutes before turning it on.
The earphone cannot be charged.| The earphone metal contacts are not well connected to the charging box pins.| Take out your earphone and adjust the metal contact angle, and then put it back into the charging box. Ensure that the metal contacts are well connected to the charging box pins.
The earphone cannot be powered off.| The earphone program is in error due to an incorrect operation.| Put the earphone into the charging box and reset the earphone.
The earphone cannot be searched or pairing fails.| The earphone does not enter the pairing state.| Enable the earphone to enter the pairing state.
The Bluetooth application of the cell phone is in error.| Restart the cell phone and pair the cell phone with the earphone.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

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