Specifications:
1.BTE Hearing aid
2.Max Sound Output: 129dB ± 4dB
3.Max Sound Gain: 50dB ± 5dB
4.Harmonic Wave Distortion: ≤5%
5.Frequency Range: 450~3500 hz
6.Input Noise: ≤30 dB
7.Battery: AG13 button battery (included)
8.Working Voltage: 1.5 V
9.Working Current: ≤4mA
10.Color: As the picture shows
11.Item Size: 6.75 x 4.35 x 1.9cm
12.Package Size: 10 x 8 x 3.5cm
13.Net Weight: 7g
Package included:
1 x F-138 Hearing aid
3 x Earplug (different sizes)
2 x AG13 button cell battery
1 x User manual