Type Digital Bluetooth rechargeable BTE hearing aids Material Hearing relief host: ABS Earplugs: silica gel Max-OSPL90 ≤110dB+5dB HFA-SSPL90 108dB±3dB HFA Full-on Gain 35dB±4dB Frequency Range 200Hz~5000Hz THD at 500Hz≤3% 800Hz≤3% 1600Hz≤3% Eq Input Noise Level ≤25dB Battery Current Drain ≤2 Battery Size Built-in Lithium Battery Charging Time 4h Working Time 14hours Certifications RoHs FCC ISO13488 Size 30×19×8 mm Color Beige Accessories Hearing device:2 Earplugs:8 Cleaning brush:1 Charging cable:1 Charger:1 Instructions:1 Charging case:1 Advantage Features 1) Fully digital signal processing,16channels 2) Bluetooth, App management 3) Magnetic suction charging 4) Turn on robotically when take out of the charging case and turn off when place again 5) RIC ,small length ,invisible put on 6) Four modes 7)Volume and modes control switchThe left and right sides of this listening to aid are offered individually If you wish a pair of prices that require payment!