At only 3.5 grams and 19mm x 30mm x 9mm (WxLxH), the AR6100 is the ultimate 2.4GHz receiver. Because it uses advanced DSM2 technology, it is only compatible with the new DX7 aircraft system. It also boasts a wide input range that allows it to operate with 3.5 to 9-volt electrical systems. Features: Super light weight at 3.5 grams. Glitch-free DSM2 Technology. 6 Channels. Compact design. Short antennas for mounting convenience. Only compatible with the DX7.