Model: AD600 Pro Bowens Mount. POWER: 600W. Flash Mode: Wireless off:Slave unit of radio transmission/M/Multi:TTL/ M/Multi. (m ISO 100): 87 (m ISO 100, with high-efficiency standard reflector). Wireless Slave Unit Mode: Rdio transmission mode (compatible with Nikon & Canon,Sony,Olympus,Panasonic,Fujifilm ).