Model: MK951 - Color: Black - Plastic housing material - 2" LCD display - Support auto/manual zooming - Vertical rotation angle: 0-90 degrees - Horizontal rotation angle: 0-270 degrees - Flash mode: TTL auto/manual - Wireless triggering distance: high speed mode 0.5~7.5m (max 21m) normal mode 0.5~30m - Flash duration: high speed mode less than 2.3ms normal mode less than 1.2ms - Flash Output Compensation: manual / auto (±3EV 1/3EV) - Recycle time: high speed mode 0.1~3s normal mode 0.1~6s - Frequency: 1~199Hz - AF assist lamp: 1~45 multizone (focus range over 28mm) - Uses 4 x AA manganese / lithium / cadmium / Ni-MH batteries (not included) or uses external CP-E4 battery case with 8 x AA batteries (not included) - With wide angle diffuser included - Comes with stand & carrying bag - Compatible with Canon EOS-5DII / 7D / 5D / 50D / 60D / 600D / 550D / 450D