Origin:China Mainland Model Number:F-18 Certification:CE,FCC,RoHS
Steps for usage:
① Choose a suitable earplug to make the product sealed in the ear canal
② Low down the sound volume before use
③ When you put into battery , please be quick , to put the product into the ear
④ Remove the battery if you don't use it for long time.
⑤ Contact us if you receive has any function, appearance or other problems.
⑥ You reserve the right to return and refund before the product is confirmed to be received.
Features:
Max Sound Output: 129 ± 4dB
Max Sound Gain: 55dB ± 5dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 450~3500 Hz
Input Noise: ≤30 dB
Battery: AA battery
Working Voltage: DC 1.5V
Working Current: ≤4mA
List:
1 x Host
4 x Earplugs
1 x Headphone cable
1 x Manual
1 x Anti-vibration box
AA battery does not include.
