System type: Digital FSK 2.4GHz wireless transceiverDistance: 100MChannel: 7Flash mode: E-TTL(II), Manual flash, Multi flashSync mode: 1st curtain, 2nd curtain, Hi-speed syncGroups: 3Groups (A/B/C)Sync speed: 1/8000s*Input: Hot-shoe(TTL,main contact)Output: Hoe shoe, PC portApplicable batter y: AAX2 (support 1.2 V rechargeablebatter y)Stand-by time: 60hDimensions: 89.5×53×39mmWeight:78g* Sync speed of part of cameras and flashes may belower.※ All of the specification parameters are base on testconditions of our company. All registered trademarksare the property of their respective owners in thisusermanual. Specifications subject to change withoutnotic.Specifications28