Product Description: Digital hearing aids for mild to moderate hearing loss. tiny and invisible behind the ear. Stable quality. Clarity sound. Technical Data: Fitting coverage: 10-90dB; Peak gain: 42dB; HFA full on gain: 35dB; Total harmonic distortion: <1.5%; EQ input noise: <25dB; Battery currency: 1.0mAh Specifications: *2 channels digital *Rocker VC