Features of the Godox AD600B Witstro TTL All-In-One Outdoor Flash Key 600W monolight powered by a Li-Ion battery Each charge can power up to 500 full-power flashes. Suitable for the Major TTL Systems Integrated Wireless X System at 2.4 GHz 1/256 to 1/1 Control of Power Time Spent Recycling (0.01-2.5) Flash Times: As little as 1/10,000 or 1/8000 seconds Fast Sync Not required With the AD-H1200 Head, 1200Ws The multipurpose Godox AD600B Witstro TTL All-In-One Outdoor Flash is compatible with a number of TTL systems, such as the Canon E-TTL II, Nikon i-TTL, Sony, and Panasonic. With a powerful 11.1V /8700mAh lithium-ion battery pack that can power up to 500 full-power flashes, it offers up to 600Ws with nine output power steps, ranging from 1/1 to 1/256. As an alternative, you can use AC to run the monolight.