AAB52SP is non-programmable rechargeable BTE hearing aid. Based on integrated signal processing, AAB52SP features two pre-set switch. The hearing aid contains a built-in lithium-ion rechargeable battery. Use the supplied micro-USB cable to charge the hearing aid. Audiological Features · Low Equivalent Input Noise · Super Clear Sound · Low Frequency Cut Filte Functional Features · Integrated Analog · Balanced Armature Receiver · MEMS Mic · Volume Control · ‘H’ control for low frequency suppression · ‘N’ control for normal · ‘O’ control for turn off power · Rechargeable lithium-ion battery · Charging time: 2.5 hours · Battery life: 40 hours per full charge The indicator (yellow) on the case lights up and the hearing aid starts charging. The indicator (green) on the case lights up and the hearing aid is fully charged.

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