VILTROX JY-680 is a compatible with standard hot shoe DSLR camera with big guide number speedlite. Follow Canon 560EX flash excellent mould technology, VIXTROX speedlite (GN:58,ISO:100m) can support Multi high frequent flash and modeling illuminator flash function. Flash coverage can be set from 24-105mm, Manual adjust flash ratio output in 22 levels. With Simple Flash operation, you can take the picture more easier and creative. Product Feature: Guide NO.:GN58(ISO100,focal length:105mm) Manual zoom, Flash coverage from 24_105mm Modeling illuminator: Test the Illumination and reflector shadow. High Frequent flash: High speed Flash without any confused, can meet special need in all position. LCD screen panel, clear display and easy to know Big rang ratio adjust, 22 levels ratio exact adjust, the lowest reach 1/128 Very short continuous flash(≤1.2ms),fast recycle time(0.1-5S) Capacity of energy saving and overheating protection function With four AA batteries, flash times can last to 100~700 times. With quickly charge port, can use the battery box meet the highest recycle’s need