Meike High speed synchronous flash MK600 for Canon Digital SLR Cameras [Free GIFT!!] Excellent dust proof and water drop proof function, Wireless multiple flash control, Comprehensive and professional flash, support setting various flash functions through DSLR, New additions of power socket and PC port Maximum GN.60 (105mm, ISO 100 meter),Flash range 24-105mm lens focal length Support High speed sync, Front-curtain sync and rear-curtain sync Flash mode:Hight Speed,Master,Slave,TTL M, MULTI, S1, S5 metal hot shoe