Yongnuo YN560 IV 2.4G Wireless Flash Speedlite +Yongnuo RF-603 II N3 Transmitter and Receiver with N3 Cable Wireless Flash Trigger for Nikon 1.YN-560IV is conpatible for Canon Pentax Olympus etc , and it is 560III upgraded version,a Combination of YN-560 III and YN560-TX all functions. 2.YN-560IV Supports Wireless Slave Function, fully supports YN560-TX, RF-603 II, RF-602 Wireless Transmitter. 3.RF-603 II Works as a wireless shutter release control to trigger your camera;Transceiver System - works as a wireless flash trigger and receiver. 4.RF-603 II N3 compatible forDSLR D7100, D7000, D5100, D5000, D3200, D3100, D600, D90, D5300,D750. 5.RF603 II Fulfill the function of Auto-Focus, Continuous shooting, Long Exposure, Half-Way Pressing, Full-way Pressing and Bulb