Specifications:Input voltage: 12VWorking frequency: 1.2G~1.3GChannel: 8Ch， AV synchronization (CH4: 1080Hz， CH5: 1120Hz， CH6: 1160Hz， CH7: 1200Hz， CH8: 1240Hz， CH9: 1280Hz， CH(H): 1320Hz， CH(C): 1360Hz)Output power: 800mWTransmission distance (open space): 800m~1000mTransmitter size: 5.4 * 4.5 * 1.9cm / 2.1 * 1.8 * 0.7inTransmitter weight: 78g / 2.7ozReceiver size: 11.5 * 8.0 * 2.2cm / 4.5 * 3.1 * 0.9inReceiver weight: 116g / 4.1ozPackage size: 18 * 14.6 * 6.7cm / 7.1 * 5.7 * 2.6inPackage weight: 458g / 1.01LbsPackage List:1 * Wireless Transmitter1 * Receiver2 * Antennas2 * AV Cables1 * User Manual (English)