K-80助听器 英文装 超小隐形声音放大器

Features:
1.Brand new and high quality invisible hearing aid sound amplifier
2.Super mini size and light weight, not easily to be seen
3.Adjust volume to the minimum before wearing
4.Increase volume gradually to avoid sudden increase in sound
5.Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound 6.clearly and loudly
Specification:
1.Mini ITE Hearing aid
2.Max Sound Output: ≥120 dB
3.Max Sound Gain: ≥30 dB
4.Harmonic Wave Distortion: f<1000Hz≤10%,f>1000Hz≤4%
5.Frequency Range: 250～3800 Hz
6.Input Noise: ≤50 dB
7.Battery: AG3 Button battery (included) 
8.Working Voltage: dc1.5V 
9.Working Current: ≤4mA
10.Color: As the picture shows
11.Item Size: 1.9 x 1.4 x 1.6cm 
12.Package Size: 8.5 x 5.5 x 3.5cm 
13.Net Weight:3g
Package included:
1x K-80 Hearing aid 
2x Earplug (different sizes)
2x AG3 Button battery
1x User manual
1x Box