Weight:395g Dimensions:3.15in*1.34in(8cm*3.4cm) Brand:N/A Model:W2001 Color:Black Wireless:Yes Plug:3.5 Frequency range：20-20000 Speaker Diameter:40 Style:Headband Impedance:32 Output Power:PC Received frequency:86-108MHZ Speaker Diameter :Ф40.00mm Modulation Mode:FM/RF Receive sensitivity:0DB Impedance:32Ω Transmitting Distance:30M(Outdoors) Max Output Power:3mW Sensitivity:110DB S.P.L at 1KHz Transmitting Power:5MV Working Voltage:3.0V(2AAA) Rated Power:15mW Working Current:12mA Dynamic Working Current:5mA Power Capacity:150mW SNR:more than 45DB Frequency Response:20~20KHz Packing List:1x Headphone 1x Audio Cable 1x Transmitter Base Station<img src="//112.74.112.28/down/products/423822/423822_000.jpg">