Lifebox - Model L-HA01 -BTE Hearing Aid

Peak OSPL 90 ( dB SPL) : maximum power output 130 dB; HAF OSPL 90 ( dB SPL) : average output 120 dB; Peak Gain(dB) : maximum gain 46 dB (output minus input); HAF/FOG Gain (dB) : average gain 38 dB; Frequency range(Hz) : 500-4500Hz; Distortion: 500Hz : 5% | 800Hz : 3%?1600Hz : 1%; Equivalent Input Noise (dB): 28 dB; 4 level adjustable volume; 1*A657 1.4V battery; Long working hours: ~ 200 hrs.; Dimension: 10 x 45 x 40 mm.; Weight: 6 grams (not include battery).