... up to 25-30hours play time. Best-selling!Mini!Rechargeable!High Power!1 Year Warranty! -Analogue rechargeable ITE hearing aid,sound amplifier ... ,competitive price-On/off swtich-Volume control-Mini size,great power,max sound gain up to 50dB-Rechargeable,fast charging 5 ... play time.-With NI-MH battery inside,low curretn and power saving-Main Unit Size 22*19*14mm, NW: 3g-Blister ...