The Profoto B1X 500 is a 500w battery powered flash designed for the adventurous photographer who likes to get out there on location in the real world. The Profoto B1X can be used both on, or off camera, and is battery-powered to provide freedom and flexibility. The B1X is compatible with Profoto’s dedicated system of lightweight OCF light shaping tools that are designed for maximum mobility and ease of use.The two-light location kit comprises of two B1X 500 AirTTL monolights, two Li-Ion batteries, a 4.5A battery charger, a 1.8A car charger, and a backpack.