2.4GHz wireless mobile recorder 4-channel palm wireless mobile AV camera & receiver MP3, MP4 player 960*240 pixels 2.5TFT LCD ... control: automatic Transmission range: 100m without block Transmission frequency: ISM 2,400 to 2,483MHz CH1=2,414MHz, CH2=2,432MHz CH3=2,450MHz, CH4=2 ... : 4.7V/lux-sec at 5,600K Gain control: automatic Transmission range: 100m without block Imaging sensor ...