Features: Specially designing for enthusiasts and professionals, ensuring excellent signal transmission over long distances. Advanced technology can reduce the frequency of interferences and improve the compatibility of equipment. Featuring 8 channel for freely switching and reduced interferences. The 4W power supply provides powerful sound and video transmission, helping to record every detail. The small size design and lightweight structure, easy to install, great for remote-controlled UAV and aircrafts. Specifications: Material: Metal Color: Silver Transmitter Size: approx. 3.15x7.91cm/1.24x3.11inch Receiving frequency: 0.9~1.2GHz Video input level: 1Vp-p Sound input level: 1Vp-p Transmission frequency: 1080/1120/1160/1200/1240/1280/1320/1360MHz Working temperature:- 20~+50°C/-4~+122°H Working humidity: 85% relative humidity Storage temperature:- 40~+80°C/-40~+185°H Voltages: 7.4V-26V Current: 500mA Transmission power: 4W Channel selection: 8 Channel Outdoor aerial photography distance in opened space: 16-22KM Package Includes: 1 Piece 1.2G 4W Transmitter 1 Piece Y-shape Antennae note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.