Yongnuo RF-603 C1 Kit Wireless Flash Trigger Transceiver For Canon C1 550D 600D 1000D 60D 500D 450D 400D 350D 300D
Wirelessly and simultaneously control flash speedlites and strobe lights .
On/Off camera wireless remote or just remote shutter release .
2.4Ghz wireless frequency for optimum transfer speed, stability, and distance .