A-60 USB Rechargeable Hearing Aids Adjustable Tone Sound Voice Amplifier, A-60 Option:A-60 Carton Size 90cm * 62cm

Carton Size 90cm * 62cm * 9cm / 35

Suitable for the crowd: unisex

Usage Instruction:

Laser Wavelength: 532nm

A-60 USB Rechargeable Hearing Aids Adjustable Tone Sound Voice Amplifier, A-60 Option:A-60 Carton Size 90cm * 62cm1. Sound output (MAX): 129+ 4 dB 2. Sound Gain (MAX): 50dB + 5dB 3. Harmonic distortion: less than or equal to 5% 4. Frequency range: 450~3500hz 5. Input noise: less than or equal to 30 dB 6. Battery: Lithium battery 7. Working voltage: DC 3. 7V 8. Working current: less than or equal to 3mA 9. Dimensions: 6. 6 x 1. 3 x 1. 3cm 10. Net weight: 26g 11. Please do not use the computer to charge. 12. Please do not charge more than 6 hours Specification: