Simpex 648RX with in-built trigger, Universal Electronic Flash Speedlite

Simpex 648RX with in-built trigger, Universal Electronic Flash Speedlite for DSLR Cameras Canon Nikon Pentax Olympus with Standard Hot Shoe Mount (with Trigger)   Power : 4 x AA size batteries (Alkaline or Ni-MH are usable)  Lighting Time : 100-1500 times (AA Alkaline Battery used)  Recycle Time: Approx. 0.1-5s ( Alkaline Battery used)  Light Quantity Output Control : with 1/8 strop increment, Flash Duration : 1/200~1/20000s  Battery NOT included