VILTROX JY-680A Universal LCD Flash speedlight for Canon EOS 1D 1DC 1DX 1Ds1D Mark III 1D and Nikon D850 D750 Fuji Pentax Olympus Cameras VILTROX JY-680A is Universal Flash for Canon Nikon Fujifilm Samsung DSLR Camera,if your cameras is Sony,you may need to buy a hotshoe adapter. Guide Number: GN33 (m ISO 100, @105mm),22 stops accurate adjust power output 1/128-1/1 in 1/3rd increment Large LCD screen display in high definition, accurate and clearly,light weight of durable matererial,won't be a burden when shooting. Built in power saving and overheat protection function,consuming low power,enables a long shooting Recycling: 0.3-5s,Power Supply: 4*AA Ni-MH Batteries,(Note:battery not include in this package)