35 hours use depending on settings and usage.
Rechargeable In-Ear Sound Amplifier with Noise Cancelling, Includes Storage Case for Hearing Enhancement in Adults
1/2pc Hearing Aids Digital Rechargeable In-Ear Sound Voice Amplifier for Seniors
Mini Hearing Aid Rechargeable In-Ear Sound Amplifier for Adults Seniors Enhancer
Rechargeable In-Ear Sound Amplifiers (Pair) Touch Control Noise Reduction LED Ch
Rechargeable In-Ear Sound Amplifiers (Pair) Touch Control Noise Reduction LED
Digital Hearing Aid - Rechargeable In-Ear Sound Amplifier with Noise Cancelling for Adults, Includes Storage Case for Enhanced Hearing
