Rechargeable Digital BTE Hearing Aid Adjustable Volume Deaf Mini Sound Amplifier Portable Elderly Hearing Amplifier color:R03L1-Pair 8) Add user fingerprints

8) Add user fingerprints

Assisted GPS with fast fix times

Tracking Method: Infrared Tracking

Is there SDR function

shock G-spot

Rechargeable Digital BTE Hearing Aid Adjustable Volume Deaf Mini Sound Amplifier Portable Elderly Hearing Amplifier color:R03L1-Pair 8) Add user fingerprintsNote 1. Adjust volume to the minimum before wearing. 2. Choose an earplug of slightly bigger size to avoid whistler. 3. Increase volume gradually to avoid sudden increase in sound. 4. If you hear a howling, check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. If it still does not work, please check the chat window leave me a message. 5. Keep the ear