Cordless, compact, fast and powerful, the new Siros 400 L is Broncolor's latest battery-powered flash head for professionals. Whether you're shooting in the studio or out in the field, the Siros L is the ideal start in professional, battery-powered photography, and perfect when available ambient light needs supplementing with flash. Made from aluminium, this stylish, simple to use head offers up to 440 flashes at full power per battery charge, colour constancy and both very fast, and also long, flash durations. All the basic functions of Siros L can be operated on your mobile via the BronControl App. This twin head kit is also available in 800 Joules.