Rechargeable BTE Hearing Aid for seniors kids and mild to moderate 70 dB hearing loss. Cadenza H (H10/H6/H4/H2) are rechargeable BTE hearing aids which adopts digital processing technology to amplify sound signal and automatically eliminates sound feedback. Mini rechargeable digital hearing aid is an ideal option for the seniors with mild to moderate hearing loss. Instant fit OTC hearing aids. Two multi-function buttons, adjustable volume and program switch, prefabricated 2 to 4 listening programs (universal, clear, soft, masking tinnitus), easy to switch. The cyclic rechargeable design solves the worry of purchasing batteries. The functions (volume, program and sleep) of the button control can be realized according to the different time (1S, 2S and 5S) to avoid the inconvenience of starting and debugging each time.