AD600M/AD600BM All-in-One Outdoor Flash ----Godox.com

AD600M/AD600BM All-in-One Outdoor Flash is powerful and portable with professional lithium battery pack. Built-in Godox 2.4G wireless X system, AD600M/AD600BM support M/Multi functions. Both AD600M (Godox mount) and AD600BM (Bowens mount) have varies of accessories. With the AD600 series flash,your shooting will become simpler. You can easily achieve a correct flash exposure even in complex light-changing environments.
http://www.godox.com/EN/Products_Camera_Flash_Witstro_AD600M_Powerfou&Portable_Flash.html

Features:
Model: AD600M/AD600BM
Flash Mode: Wireless off, M/Multi
Guide No. (m ISO 100): 87(m ISO 100,with AD-R6/R7 standard reflector)
Flash Duration: 1/220 to 1/10000 seconds
POWER: 600W
Power Output: 9 steps：1/256~1/1
Stroboscopic Flash: Provided(up to 100 times, 100Hz)
Sync Mode: High-speed sync (up to 1/8000 seconds), first-curtain sync, and second-curtain sync
Delay Flash: 0.01~30 seconds
Mask: √
Fan: √
Beeper: √
Modeling Lamp(LED): 10W
Optical Slave Flash: S1/S2
Flash Duration Indication: √