Wholesale Discount Dsc Doctor Vehicle – Nef - Portable Hearing Aid – DSC

Usage method

Please select the earplug of appropriate size and plug them tightly for the whistling sound caused by the large gap between the earplug and ear canal. Make sure to wipe this product with a soft dry and remove the earwax in the earplug frequently. 

Matters needing attention

1、No falling or collision of this product.

2、 Please keep the product away from direct sunlight. 
3、Do not use this product in explosive environment or place it with chemicals. 

4、Do not imnmerse this product in any liquid nor use it in high temperature, humidity and 
vibration environment. Do not clean this product with detergent, industrial alcohol or petrol. 

5、Do not swim or have a bath while wearing hearing aid. Please take off the hearing aid when you wash your face and well protect it in rainy days. 
6、It is prohibited to have self disassembly, repair or modification of the hearing aid. 

The key to explain

1、INTHE SLEEP STATE

PRESS AND HOLD THE PROGRAM KEY

FOR 3 SECONDS, AND THE PROMPT

SOUNDS THREE TIMES.

2、IN THE WORKING STATE

PRESS AND HOLD THE PROGRAM

KEY FOR 5 SECONDS TO TURN OFF

THE MACHINE, AND THEN TURN 

3、VOLUME

SHORT PRESS TO INCREASE AND

DECREASE THE VOLUME. WHEN

THE VOLUME IS ADJUSTED TO THE

MAXIMUM OR MINIMUM, THERE WILL

BE TWO PROMPT SOUNDS “DRIP”

IN THE CHARGING STATE

MCU GOES TO SLEEP, AND THE GREEN LIGHT IS ALWAYS ON DURING CHARGING.WHEN FULLY CHARGED, THE GREEN LIGHT GOES OUT. THE CHARGING TIME SHALL NOT EXCEED 2 HOURS.

LOW BATTERY PROMPT

WHEN THE POWER CAN STILL BE USED FOR 2 HOURS, THE PROMPT SOUNDS 3 TIMES (SHORT 3 TIMES), REMINDING EVERY 5 MINUTES.

Product size