Specifications:
High qualit BTE with USA speaker
Max Sound Output: ≥125dB
Max Sound Gain: 50dB ± 5dB
Harmonic Wave Distortion: f!#!lt!*!1000Hz≤3%，f!#!gt!*!1000Hz≤2%
Frequency Range: 300~4500 hz
Input Noise: ≤30 dB
Battery: A675 Zinc Air Battery (Not Included)
Working Voltage: dc1.5V
Working Current: ≤1.5mA
Color: As the picture shows
Item Size: 4.5 x 3.2 x 0.9cm
Package Size: 12.0 x 7.5 x 3.5cm
Net Weight: 8g

Pls note: This item comes without batteries!

Package included:
1 x V-263P Hearing aid
4 x Earplug (different sizes)
1 x User manual
1 x Box

Note:
Adjust volume to the minimum before wearing.
Choose an earplug of slightly bigger size to avoid whistler.
Increase volume gradually to avoid sudden increase in sound.
If you hear a howling， check the ear (silica gel) is appropriate and whether the size of plug is tight， the appropriate choice of earplugs， make sure no air leakage.
Keep the ear plug clean
Remove the battery if you don't use it for long time.