USB Charging Earhook Noise Reduction Hearing Aid Sound Amplifier % SSD Related Parts (The voltage of battery input

(The voltage of battery input and output has an error of

The software only supports windows system

ultrasonic ranging

good bending resistance and long service life

USB Charging Earhook Noise Reduction Hearing Aid Sound Amplifier % SSD Related Parts (The voltage of battery input1. Sound output: 114 122dB Max 2. Sound gain: 30 34dB 3. Total harmonic distortion: 7% 4. Frequency range: 300 3800MHz 5. Input noise: 32dB 6. Voltage: DC 3. 7V 7. Current: 2mA 8. Built in battery: 45mAh 9. Fully charged for about 3 hours 10. Normal work about 45 hours Specification: Package Weight One Package Weight 0. 08kgs 0. 19lb One Package Size 9cm * 8cm * 3cm 3. 54inch * 3. 15inch * 1. 18inch Qty per Carton 100 Carton Weight 8. 10kgs 17. 86lb