2pcs ear hearing device with removable chargingcase. 57dB peakgain, suitable for mild to moderate hearing loss (Reference hearing loss map). Biomimetic designed for hearing impaired, more fitting the earcanal, do not feel pain even when worn for a long time. Volume adjustable, lightweight and the compact structure fits for put into your pocket and carry around with you. Comes with 6pcs/3pairs earplugs to reduce howling and noise, you can choose the fittest one.

Specifications:
Name: Hearing Aids
Color: black, white (optional)
Battery: 1 * 4.2V, 30mAh battery (included)
Max OSPL90: ≤118dB+3dB
Average OSPL90: 113dB+4dB
Maximum Sound Gain: 35dB+5dB
Average Sound Gain: 30dB+5dB
Work Current: ≤5mA
Equivalent Input Noise: ≤29dB+3dB
Total Harmonic Distortion: ≤10%
Frequency Response: 300Hz-4500Hz
Item size:
Hearing device size: 25 * 22mm / 0.98 * 0.87in
Case size: 58 * 38 * 26mm / 2.28 * 1.50 * 1.02in
Package size: 100 * 100 * 50mm / 3.94 * 3.94 * 1.97in
Package weight: 185g / 6.53ounce

Packing List:
1 * Hearing Aids (a pair,2pcs)
1 * Chargingcase 
6 * Earmuffs(different sizes, 6pcs/3pairs)
1 * Cable
1 * Cleaning Brush
1 * Volume Adjustment Bracket
1 * Guideline