Using global free 2.4GHz channel and FSK modulation system - 16 selectable frequency channels - Flash sync speed is up to 1/250s - Support the flashgun wake-up function; You'll never miss any shot opportunity (Wake up can only used in TTL Compatible flash) - Fire the flashgun through hot shoe part and fire the studio light through PC socket - Maximum operating distance is up to 80 meters - Transmitter using the 1 x CR2032 Lithium battery - Receiver using the 2 x AAA battery - Compatible Camera Type: Sony DSLR A900 A850 A700 A550 A500 A350 A300 A200 A100 Konica Minolta DIMAGE A2 A1 9 7hi 7i 5 4 3 DYNAX 7D 5D - Package included: - 1 x Transmitter - 1 x Receiver - 1 x CR2032 Battery - 2 x AAA Battery - 1 x 2.5mm Shutter Control Cable - 1 x 3.5mm to 2.5mm Cable - 1 x 3.5mm Switch to 6.35mm Plug - 1 x Receiver Holding Mount - 1 x English/Chinese User Manual