Neck-hanging 16-channel Bluetooth Hearing Aid Rechargeable Sound Amplifier for The Elderly (Black)

1. Neck-hanging Bluetooth hearing aid, intelligent noise reduction mode, makes peoples voice clearer and communication with others smoother2. Bluetooth hearing aid two-in-one, comfortable to wear, can be bent at will3. Adopt BES mid-range Bluetooth single chip, 16-channel Bluetooth digital hearing aid4. No need to fit the hearing aid curve design, 5-level volume adjustment5. Can connect to mobile phone to listen to music and make callsParameters:1. Average OSPL90: 115 /-3dB2. Full sound gain: 30 /-3dB3. Frequency response range: 200Hz~6000Hz4. Equivalent input noise level: less than or equal to 12 /-3dB5. Total harmonic distortion: less than 5%6. Working current: less than 12mA