1) The HDMI Adapter is copatible with iPad 2 / iPad / iPhone 4 / iPod Touch 4 2) Support to transmit the Video and Audio to HD TV or your HDMI device Not as the VGA adapter, only transmit video 3) Support 720P / 1080P HD digital signal output 4) Support videos, movies, MTV, Podcast, etc 5）The HDMI Adapter is small and it's very easy to carry to anywhere 6) Plug and play, no need power supply, no need jaibreak 7) Consume iPad 2 / iPad / iPhone 4 / iPod Touch 4 50% power when play for 2 hours 8) It is used to be charged via USB port 9) It is used for data transformation via USB port