This kit includes the Lumedyne HV Ultracycler battery charger which generates the high voltage necessary to recycle Nikon Speedlights, the Lumedyne CQ1Z International Quick Charger, a wall mount transformer that comes with USA, Euro, UK and AU (Australian) plugs, and the HV Module to connect the Ultracycler to SB-800, SB-80DX, SB-28DX, and European SB-28 Speedlights.