fitTek Voeloon 810-RT Multi-Channel 2.4GHz 2-IN-1 i-TTL 31 Channels Wireless Flash Trigger Transceiver with LCD Display + Shutter Release for Nikon D7100 D7000 D5100 D5000 D3200 D3100 D600 D90 D800E D800 D700 D300S D300 D200 D4 D3S D3X D2Xs and other