... 433MHz,four digit code avaiable.2.Transmitter size(LxWxH):80x25x28mm.3.Receiver size(LxWxH):50x40x30(included hot shoe).4.Battery: ... common battery 23A and the CR2.3.To control single-frame,continuous-frame and bulb mode,supports 3 seconds delay shoot and the group ... easy to operation with all functional keys and supports single-frame,continuous-frame,bulb mode,has the time delay photography as well ...