Model Number: YU-RF8131 new-1 Brand Name: OEM,ODM Key Specifications/Special Features: Features:Adopting latest 2.4GHz stereo Hi-Fi wireless solution and applying imported chip on the digital circuitWith CE, FCC and RoHS certificatesEffective transmission range 25m inside rooms, 70m outside (minimum)

Rechargeable built-in lithium battery is able to work as long as 12 hours

widely applicable to PC, TV, DVD,VCD, MP3/MP4 players and other major audio sources

6-in-1 functions:

Wireless headphone

Wired headphone

FM radio receiver

Wireless monitor

Wireless chat on-line

Base station with recharge function for headphones

Specifications:

Transmitter frequency range: 2.4 to 2.5GHz

Transmission range: 80 meters

Receiver frequency range: 2.4 to 2.5GHz

Frequency response range: 20 to 20,000Hz

Impedance: 32 Ohms

Disproportion: 0.5%

S/N ratio: 95dB