Model: DWH260 - Color: Black + grey - Supported systems: Windows XP / Windows Vista / Win7 - Compatible with cell phone MP3/4/5 PSP Tablet PC TV STB Speaker etc. - Working frequency: 2.4GHz~2.480GHz - Modulation mode: GFSK - Headphone frequency response: 20Hz~20KHz - Receiving distance: < 20 meters - Receiving range: 360 degrees - SNR: 86dB - THD: <= 1% - Working voltage: 3.1~4.2V - Working current: 50mA - Charging time: 2 hours - Working time: 6 hours - Battery capacity of headset: 320mAh - Max. output power: 5mW - Loudspeaker size: 40mm - Impedance: 32ohm - Working voltage of adapter: 5V - Working current: 65mA - Interface: USB + AUX - Packing list: - 1 x Headset - 1 x 2.4GHz receiver (built-in 250mAh battery) - 1 x 100~240V power adapter (2-round-pin plug/EU plug) - 2 x USB cables (120cm) - 1 x 3.5mm audio cable (100cm) - 1 x RCA audio cable (25cm) - 1 x Chinese/English user manual