1 Rook is a professional grouping flash trigger.
2 Transmitter hot shoe support TTL and sync with off shoe flash.
3 Wake-up function available, the flash will be wake up automatically.
4 Through 3.5 socket to control studio light, shutter sync speed up to 1/200S. (max. sync speed is depend on the camera model)
5 Available to control the shooting or through master camera to control