Features:

Breathable Knit Earmuffs

30 Meters Transmission Distance

Human Engineering Design for Adjustable Wearing

Optical Connection

Specifications:

Carrier Frequency : 2.4GHz Digital

Operation Voltage : Transmitter AC/DC 5V Power Adaptor

Headphone 2 x1.2V AAA size Rechargeable NiMh batteries(included)

Frequency Response: 20Hz – 20KHz

Distortion: 0.5%

S/N Ratio: 80dB

Operation Time: 15~20 Hours

Charge Time: 7.5 Hours

Operation Distance: 30 Meters