Ting DJ Hearing Aid Sound Amplifier No Earplug No Howling with China Patent EN-IA013A 

1. Microphone input/indicator 

2. Multi-function finger touch switch ( user control)

  Mode adjustments

  Press and hold for 2 seconds

  Volume adjustments 

3.Two ways ON/OFF

  3.1 Automatically ON/OFF

  3.2 Power ON: after take out from the charge case, the devices will be auto ON until the green light flashes 3 times. 

  3.3 Power OFF: power off directly after put back into t he charger case and the green light of charger case also on. Means they already power off and charging started.

 4.Manual ON/OFF

   4.1 press and hold for more than 7 seconds, the green light flashes 3 times -opened/closed. 

Charging time: 1-2 hrs
Plug in the wall charging unit/power bank/computer, insert the included Type-C cords, and plug them into your charger case to charge them
1. About indicator lights
When charging beginning, the blue indicator light of charging case flash for 90 seconds, then turn to stable blue light.

Certifications: ISO13485，ISO9001，CE，FDA

The even best New Type ENNO hearing aid wonderful sounds without ear dome, no howing

High -resolution audio:  transparent high pitch, precise to ears. A wide range of vocal units, sound frequency range reaches up to 4.5KHz, every sound is precise to ears.