Yongnuo RF-603C II C1 2.4GHz Wireless Remote Flash Trigger Shutter Release. For Canon 60D 650D 600D 350D 450D 500D 550D 1000D 5D Mark III. The new RF-603 II is updated by the version of RF-603, it is a remote shutter release as well as a multi-functional flash trigger which can synchronously trigger flashes and studio strobes.
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