NEEWER WITSTRO AD180 Powerful and Portable Bare Bulb Flash - 180Ws Wireless Power Control Hotshoe and Off-Camera Speedlite WITSTRO Advanced Flash AD180: This AD180 Flash is a powerful and portable lighting source designed for professional photographers and photography enthusiasts. It is compatible with market-available cameras from Canon, Nikon, Pentax, Olympus, etc Four Modes: M, S1, S2, RPT. Flash duration of 1/300 to 1/10000 second. Color Temperature: 5600k +/- 200k Large LCD display panel Studio quality light from bare tube flash and parabolic reflector High Power: Up to 180W/S, GN60 (m ISO 100). Approx. 28mm flash coverage when operating on a camera with the standard reflector