?Model: RMI-C3 3-in-1 remote control: Trigger Studio Strobe & Control Flash Speedlite & Release Camera Shutter (including ordinary shutter， long exposure and delay shutter) Transmitting Frequency: 433MHz Channel: 16 Sync Speed: 1/200S Trigger Argument Flash Distance: ≤ 30 m Shutter Remote Control Distance: ≤ 100 m Transmitter Battery: 23AE 12V Receiver Battery: 2 x 1.5V AAA batteries Compatible with Canon EOS 1Ds Mark2， 1Ds Mark3， 1Ds Mark4， 1Ds， 1D Mark4， 1D Mark2， 1D Mark2N， 1D Mark3， 5D Mark2， 1D， 5D， 7D， 50D， 40D， 30D， 20D， 10D， D60， D30， D2000， 1v HS， 1v， 3 Package Details Weight: 240.75 g Size: 18.5*10.5*4 cm Package Includes * Remote Control 
