Yongnuo RF-603 II 2.4GHz Radio Wireless Remote Flash Trigger C1 The new RF-603 II is improved version of RF-603, it is a remote shutter release as well as a multi-functional radio flash trigger which can synchronously trigger flashes and studio strobes. Through the transceiver based system each item can be used flexibly as trigger or receiver. Only 2 AAA batteries are required as power source for each item. The 2.4GHz wireless frequency is suitable in most countries and guarantees high speed, distance and stability. Within capacious areas, the remote control distance may reach to 100m. The synchronization speed can reach to 1/320, depending on the situation it may reach to 1/250 or less. A set consist of 2 equal transceivers. Both of them can be a receiver as well as transmitter. It can trigger 1 flash with one set, since one serves as trigger and one as receiver. You can also buy additional transceivers to trigger 2 or more flashes at the same time. The pictures below just show one of the two sets. Improved features: 1. Hot shoe locking system to prevent from slipping off 2. Switch on side for easy operation 3. Enhanced self-detecting syste Functions: 1, Remote Shutter Release a), Wireless Remote Shutter Release ( On camera )--- You can mount one receiver into the camera and connect it with the camera via the 2.5mm shutter connecting cable, and can remote control the camera with other receiver. You can use it to fulfill the function of Auto-Focus, Continuous shooting, Long Exposure, Half-Way Pressing, Full-way Pressing and Bulb. b), Remote Shutter Release ( off Camera )--- You can use the single receiver to fulfill the function of remote shutter release after you connect it with your camera via the 2.5mm cable. 2, Flash Trigger a), To fire the Flash Speedlite --- one receiver can fire one flash speedlite, one set of RF-603 can control 2pcs Flash Speedlite at the same time. b), To fire the Studio Strobe light --- You need to purchase an extra 6.35mm cable to fulfill this function. 3, You can use ABOVE TWO FUNCTIONS simultaneousty. 4, The RF-603 Nikon version and Canon version can be used together --- If your have 2sets RF-603 but you lost one receiver for Canon version, it\'s no need to buy other receiver, you can use the Nikon receiver and Canon transmitter together. ( Note: the hot shoe of transmitter should be compatible with the hot shoe of camera when you use them together. ) Features: Type FSK 2.4GHz wireless remote sustem Transmitter Distance 100M Channel 16 Channels Release Half-way press, Full-way Press Receiver Interface one is 2.5mm Socket, for shutter release one is standard PC socket for flash Speedlite or studio Strobe Battery Type AAA*2 Receiver Stand-by time Up to 45hours (Using AAA battery) Size Receiver : 37 x 30 x 81.5mm (W x H x D) Suit for Flash Speedlite with " Sleep mode" function: ---Nikon ---Canon ---Olympus ---Pentax ---Samsung ---and other flashgun which has " Wake up " function Notice: For this RF-603, we have four difference cables to fit for different cameras, you can choose the related cable to fit for your camera. This listing is for C1 version. C1 version: ---Canon 1100D / 1000D / 600D / 700D 650D 100D 550D / 500D / 450D / 400D / 350D / 300D / 60D/70D C3 Version: ---Canon 1D / 1DS,1DX for EOS 5D Mark II III 6D / 5D / 7D/50D / 40D / 30D / 20D / 10D N1 Version: ---D800 D800E D3X / D3 / D700 / D300 / D2X / D2H / D200 / D1H / D1X / ---N90s / F5 / F6 / F100 ---Fuji Film: S5 Pro / S3 Pro ---for Kodak: DSC-14N N3 Version: --- for Nikon D90 D5000 D5100 D7000 D3100 D600 D610 D7200 D5300 D5200 Packaged Included: ( Batteries is not included) 1x Transmitter 1 x Receiver 1 x 2.5mm port Shutter release C1 cable 1x Manual in English and Chinese