Specification: 1.2.4G upgrade module for JR & FUtaba Product 2.4G upgrade module for JR & FUtaba Manufacturer Orienthobby Co., Ltd Type for Futaba FF9 6EX for JR 9XRII for wfly ,hitec Size Receive:6cm×4.3cm×2cm Module:5.3cm×2.7cm×1.5cm Channel 8ch,6ch Weight Transmitter module:50g, Receiver:20g Price Character High resolution , good reliability, strong anti-interferer, ground distance more than 800m.