This wireless AV transmitter& receiver enable you satisfy the transmission of A/V device and digital TV STB device. The product consist of a transmitter and a receiver, by means of radio waves,transmitting AV signals of DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other similar device,receiving them at distant end and input them into a TV set to be display. It enables you to easily realize wireless sharing of SD AV data and enjoy untrammeled hi-fi audio and visual effects. Only about 152 x 59 x 12.5 mm, only is slightly superior to a smartphone, very portable. The main specification parameters: 1. The overall dimensions: 152mmx59mmx12.5mm / 6"X2.4"X0.5" 2. Weight: 100 g / 0.22 poud 3. The applicable temperature: - 10 ℃ to + 55 ℃ 4. The battery type: built-in polymer lithium ion batteries 5. Standby time: 500 ~ 700 hours 6. Operating range: as far as can be up to 30 meters 7. Modulation method: RF adopts the model of DSSS, stronger anti-interference ability 8. Transmitted power: the biggest + 4 dBm 9. Working voltage: 3.3 V 10. Working current: < 80 ma 11. The charging voltage: 4.2 V to 4.2 V 12. The charging current: < 350 ma 13. The sleep current: < 1 ma