This superb lighting kit from Interfit proves that creating beautiful, flattering studio lighting is not difficult and it doesn't have to be expensive, either. It includes an instructional DVD to help you create perfect lighting right from the start. The EX150 also includes a soft box, a lighting accessory favored by most professionals for the soft and controllable light it creates. Combined with the white umbrella on the other flash, the 2 lights in this kit will produce soft and flattering light for portraits, still life shots, internet auction and other product shots, and more. The Mark II builds on the strengths of the original EX150 and features a redesigned flash housing with easy-to-adjust controls, more power, a brighter 100 watt modeling light, and a user-changeable flash tube. All the features add up to make a great lighting value even better. EACH EX150 MARK II FLASH FEATURES: 150 watt/second with ISO 100 guide number 96; continuously adjustable power from 1/8 to full; 100W modeling lamp; fires via PC cord, test button and built-in slave sensor; low 5 volt triggering circuit that is safe for all types of cameras. Kit consists of (2) EX150 Mark II flashes, (2) light stands, (1) 24" soft box, (1) 36" white umbrella, (1) instructional DVD, (2) AC cords, (2) PC cords, (2) modeling light bulbs.