1) USB charging, built-in 60mA lithium battery, can work continuously for more than 10 hours after fully charged
2) Bluetooth mode can be switched, and it is convenient to answer and make calls when connected to mobile phones
3) Adjustable volume, 4-gear volume adjustment, earplug size can be changed according to your ear condition
4) Equipped with cleaning brush to facilitate cleaning hearing aids at any time
5) The storage box device is more convenient for storage, safe and convenient
Product specifications
Material: ABS
ChargerDC5V / 50MA-1A
Battery:Lithium battery 60mah
Max sound output 125 + 4db
Sound gain38 + 5db
Tatal harmonic wave distortion < 5%
Frequency range 300HZ-4500HZ
Input noise< 28db
VoltageD . C 3 . 7V
Current< 2MA
Color: skin color
Auxiliary functions: Bluetooth function
Product size: 4.5 * 4 * 1cm
Product weight: 6.5g
Package size: 15.5 * 10 * 4cm
Package weight: 199g
Operating instructions:
1) Insert the earplug into the headphone base
2) The earphone tube can be rotated so that the left or right ear can be adjusted at will. Put on the back ear hearing aid correctly and place the earplug tightly in the ear
3) Turn the (O-N) switch to (N), turn on the hearing aid, and turn the volume to 1 to avoid a loud sound in a moment, and adjust the volume to obtain a clear sound
4) When the sound of the hearing amplifier is very low and the hearing amplifier does not work, please charge the hearing amplifier immediately
5) When charging, turn off the hearing aid, plug one end of the USB charger into the hearing amplifier, and plug the charger into the power socket
6) When the hearing amplifier is turned on, press and hold the (M) mode button for about 3 seconds to hear a beep, and the indicator light flashes blue, indicating that the Bluetooth function is enabled and enters the pairing state
7) Start the Bluetooth function of your phone and search for ZTQ. When the wiring is successful, you will hear the voice prompt of "successful pairing", and the phone will display successful connection Note: the second time you open it, it will automatically connect. If the battery is low, Bluetooth will not start, but the hearing regulator device will work normally
8) During a phone call, briefly press (M) to answer/end the call, and long press (M) for about 3 seconds to reject the connection; When playing music, briefly press the (M) key to pause/play. When no audio signal is input to the hearing amplifier, it will automatically switch to the standby mode, and then automatically switch to the hearing amplifier function 10 seconds later. After a period of time, the Bluetooth function automatically turns off
Precautions:
1) The new hearing amplifier should be charged for 6 hours several times before use, and it is better to recharge after using the battery for the second time. Therefore, the battery can reach the optimal state only after three cycles
2) Please do not use the hearing amplifier with loud volume for a long time. It will damage your hearing
3) Please maintain the product at any time to avoid damage to earplugs and microphones
4) Please don't take a shower or swim Do not expose the hearing amplifier to the sun or close to the radiator or other heat sources when it is used in a rainy or humid environment
5) Please protect the hearing amplifier carefully to avoid falling on the floor
6) Please use the specified charger
7) Do not remove or modify the hearing amplifier
