• Lightweight and compact, you won't even feel like you're wearing it

• Say goodbye to the frustration and embarrassment that comes with not being able to hear properly 

• If you hearing whistling sound, please make sure whether if you put the earplug tightly or use an appropriate size earplug

• Designed with volume switch

• Charging station is included for convenient charging

• Comes with 3 sizes of earmuffs

Specification:

• Model: ZDC-900B

• Max SSPL (±5dB): 128dB

• Full-on-gain (FOG) (1.6KZ.±5dB): 31dB       

• Equivalent input noise level: ≤22dB

• Harmonic distortion(1.6KHZ): ≤4%

• Power supply electric voltage: 1.5V

• The sum settles electric current: ≤3mA

• Battery: 120mAh
  

• Continuous work time: ≥10 hours

• Charging time: 6-8 hours