YONGNUO RF-605 N3 Flash Trigger/Wireless Remote Shutter Release Transceiver Kit for Nikon DSLR D750 D3100 D3200 D5300 D7200 D90 D5000 D7000 D7100 D5100 D600 It can work with the older flash trigger RF603II, RF603 and RF602 together. Note:can't use them in group function together. RF-605 wireless flash trigger kit is formed by two same transceivers, through the transceiver based system each item can be used flexibly as trigger or receiver. The FSK 2.4GHz wireless frequency is suitable in most countries, distance may reach to 100m. 16 channels and A/B/C/D/E/F 6 groups (compatible with YN560-TX).Battery:AAA x 2(3v),not included. The synchronization speed can reach to 1/320s(depending on the situation). You can use shutter release function and flash trigger function simultaneously.