Yongnuo RF-603C II Wireless Remote Flash Trigger C3 for Canon 5D 1D 50D

Improved features: 1. Hot shoe locking system to prevent from slipping off 2. Switch on side for easy operation 3. Enhanced self-detecting system Functions: Supports single contact triggering. Can achieve wired and wireless remote shutter release function. Flash Trigger: to fire the Flash Speedlite; to fire the Studio Strobe light (You need to purchase an extra 6.35mm cable to fulfill this function). You can use ABOVE TWO FUNCTIONS simultaneously. This listing is for C3 version: For Canon 1D 5D 7D 10D 20D 30D 40D 50D Specifications: 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 Studio flash light interface: Standard PC socket Battery type: 2 * AAA (not included) Stand-by time: Up to 45hours (TRX); up to 400hours (TX) Item size: 80.7 * 31.3 * 25.9mm / 3.2 * 1.2 * 1.0in Item weight: 44g/ 1.6oz (each) Package size: 16 * 9 * 4.5cm / 6.3 * 3.5 * 1.8in Package weight: 177g / 6.2oz Package List: 1 * Tranceiver 1 * Receiver 1 * Shutter connecting calbe C3 1 * Manual (English)

• The new RF-603 II is improved 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.
• 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 synchronization speed can reach to 1/320, depending on the situation.
• 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.