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 600D650D 550D 500D 450D 400D 350D 20D 300D1100D1000D NikonD3s D3x D3 D700D800 D600 D300s D300D200D100 D90 D80 D70sD7100 D7000D5200 D5100 D5000 D3100D3200 D3000 D60 D40X Pentax K-5K-7 K-x K-m K-r K20D K10D K200D K100DK30 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.