Single contact, standard hot shoe camera; Guide number: GN27; Exposure control: manual operation, fixed flash light output, non-ajustable; 2 x AA batteries, not included; Guide number: about 100~680 times; Suitable for Sony NEX3 NEX5R NEX5N NEX6, CanonEOS5D 5DII 5DIII 1Ds Mark [ IV / III / II / I ], 1D Mark [ III / II N/ II / I] 7D, 60D , 50D, 40D, 30D, 700D100D 600D, 650D 550D, 500D, 450D, 400D, 350D , 20D 300D, 1100D, 1000D, NikonD3s, D3x, D3, D700, D800 D600 D300s, D300, D200, D100, D90, D80, D70s, D7100 D7000, D5200 D5100, D5000, D3100, D3200 D3000, D60, D40X, Pentax K-5K-7, K-x, K-m, K-r K20D, K10D, K200D, K100D, K30 K01 K5ii, OlympusE5, E3, E30, E300, E620, E520, E420, E450, E-P2, E-PL2, E-PL1 EL-P5, PanasonicG10GK, GH2GK, GH1GK, G2GK, G1GK, GF2GK, GF1GK.