Yongnuo Professional Flash Trigger RF-603 II N3 for Nikon DSLR D7100, D7000, D5100, D5000, D3200, D3100, D600, D90, D53,D750 etc 1.Works as a wireless shutter release control to trigger your camera;Transceiver System - works as a wireless flash trigger and receiver 2.Compatible with Canon Rebel Nikon:DSLR D7100, D7000, D5100, D5000, D3200, D3100, D600, D90, D5300.,750 3.Fulfill the function of Auto-Focus, Continuous shooting, Long Exposure, Half-Way Pressing, Full-way Pressing and Bulb. 4.Receiver Stand-by time:up to 45hours (using AAA battery) 5.One set of RF-603 can control 2pcs Flash Speedlite at the same time.