Product Description Specifications: Model: AD200 Wireless slave mode: radio transmission mode (compatible with Nikon Sony Canon) Flash mode: Wireless off (slave unit of radio transmission) - M / Multi (TTL / M / Multi) Compatible cameras under radio transmission (as slave unit): Nikon (X1N as master unit), Sony (X1S as master unit), Canon (X1C as master unit) Guide number (1/1 output): Flash light Flash head 52 (m ISO 100, @ 35mm), incandescent lamp Flash head 60 (m ISO 100, with AD-S2 standard reflector, @ 28mm) Flash duration t0.1 (approx.): Flash light Flash head / light bulb Flash head (1/220 to 1/13000 seconds) Power: 220W .