Product details of Rionet Hill Light Hearing Amplifier / Bte Hearing Aid Machine (Base) Sound Amplifier / Ear Hearing Machine / For Older Age with 1 year Warranty Made in Japan Battery Hearing Aid Suitable Upto 50% Hearing Loss Hearing amplifiers designed by audiologist are easy, durable, and comfortable to wear in the ears.Battery Size P 675 Suitable For: Normal To Moderate Suitable For Normal To Moderate, Maximum Power Output 130 dB SPL, Frequency Range 300-4000 Hz. Battery Type :P 675. Sales Package: 1 Pc Ear Hearing Machine