The AD600B Witstro TTL All-In-One Outdoor Flash from Godox is a versatile tool compatible with several TTL systems, including Canon E-TTL II, Nikon i-TTL, Sony, and Panasonic. It offers up to 600Ws with nine steps of output power, ranging from 1/1 to 1/256, and comes with a powerful 11.1V /8700mAh lithium-ion battery pack that provides up to 500 full-power flashes. Alternatively, you can run the monolight on AC power with an optional adapter for situations where portability is not a concern. A useful and interesting feature is its dual-head connection option. Two AD600 flash heads can be mounted to a separately purchased H1200 portable flash head to jack up the power to 1200Ws.