Behind the Ear Hearing Amplifier Hearing Aid Enhancer Sound Amplifier New Hot Selling

Features:
100% brand new and high quality
Accurate and easy to use
High effective and reliable to use
While in forest， if you want to hear very slight sound， it will be a good choice

Specifications:
ax Sound Output: 129dB ± 4dB
Sound Gain: 40dB
Voltage: DC 1.5 V
Volume Levels: 6
Dimensions: 2.09 x 0.98\'\' / 5.3 x 2.5cm (L x H)

Package Includes:
1 x Hearing Aid
2 x Earplug
3 x Battery