Color Black Brand Wansen Model PT-16GY Material ABS Quantity 1 Piece Compatible Brand Canon Nikon Pentax etc Compatible Models Universal Effective Distance 30 m Wired/Wireless Wireless Channel 16 Sync Time 1/250 s Working Frequency 433MHz Working Voltage 3 V Battery Model AAA Battery included or not No Remote Controller Battery Number Transmitter: 12V 23A battery Receiver: AAA battery (not included) Certification CE Other Features With studio flash interface can trigger several kinds of studio flashes; Transmitting distance up to 30M no limits with directions or angles. 1/4" nut design to be connected with tripod for stable flashlight; Speedy frequency regulation convinient for photographers to shoot. Packing List 1 x Transmitter 2 x Receiver 1 x Connecting cable (30cm) 1 x English user manual