Yongnuo YN-622N-TX i-TTL Wireless Flash Trigger for Nikon D70, D70S, D80, D90, D200, D300S, D600, D700, D800, D3000, D3100, D3200, D5000, D5100, D5200, D5300, D7000, D7100Kameras (Electronics )
Works perfectly on my Nikon 7100 in conjunction with 2 Metz 58 AF-2 digital. Receiver are of course the Yongnuo YN-622N. Highly recommended.