Description: Adjust flash function though the controller directly. Wireless triggering function. Set group, up to 6 groups. Set the flash output and flash mode. Modify multi flash frequency and count. Modify zoom for each group. Compatible with RF602 / RF603 / RF603 II. Transmission Range: 100 Meters. Support Wireless Shutter Receiver of RF603 / RF603 II. Large and clear screen, user friendly interface. Powered by two AA batteries. (not included) Suit for Canon DSLR camera. Specification: Type: Wireless controller Distance: 100 m Channel: 16 Flash mode: M / Multi Group control: A / B / C / D / E / F Zoom range: 24-105 mm Shutter interface: 2.5 mm Battery: 2 * AA batteries (NOT included) Material: pvc + alloy Size: 92*66*29mm/3.6*2.6*1.1inch Package Includes: 1Piece Wireless Controller