Origin:China Mainland Model Number:F335 Power supply:Lithium Battery Standby time:180 hours Charge time:1-2 hours Wearing method:back of ear Maximum OSPL:104dB+5dB average OSPL:120±5dB Full sound gain:28dB±5dB power:3.7V battery capacity:40mAh Total harmonic distortion:≤5%+3%
AiQUE Recharge Intraear Hearing Aids With Case HD Audio Powerful Sound Amplifier Invisible Listen Deafness Batteries Elderly Deaf
