Carrier Frequency:  bluetooth

Receive Scope: 8 meters, 360 degrees, auto match code

Frequency Response: 20 Hz - 20 KHz

SNR: > 75 db

Distortion: < 0.1%

Speaker Diameter:40 mm

Speaker Impedance: 32 ohms

Headphones Suttle:200 g

Other Features: built-in rechargeable battery/USB sound card