Vello FreeWave Wireless Remote Shutter Release for Canon and Panasonic Kit 16 Million Possible Channels | For Canon and Panasonic Cameras | Operates on Radio Frequencies (RF) Direct Line of Sight Not Required | Operating Range up to 320' (100 m) Wireless Continuous or Single Exposures | Long Time Exposures Transmitter Can Fire Multiple Receivers | Wireless Autofocusing & Triggering In The Box: FreeWave Wireless Remote Shutter Release for Canon w/3-Pin Connection, Wireless RF Receiver, Wireless RF Transmitter, 23A 12V Battery for Transmitter, CR2 3V Battery for Receiver, 2.5mm Shutter Release Cable for Canon Cameras with 3-Pin Connection, Lanyard, Clip, User's Manual, 2.5mm Remote Shutter Release Cable for Panasonic Cameras, Limited 1-Year Warranty