YONGNUO DIGITAL YN660 WIRELESS SPEEDLITE 2.GHZ

Specification

Insulated Gate Bipolar Transistor ( IGBT )
Guide NO:66 ( ISO 100, 199MM )
Flash Mode:M / Multi
Trigger Mode:Camera Set-top, TX, RX S1 S2
Zoom Range:20 24 28 35 50 70 80 105 135 199mm
Vertical rotation angle:70-90 degrees
Horizontal rotation angle:0-360 degrees
Power supply:4*AA size batteries ( Alkaline or Ni-MH battery )
Lighting Times:100-1500 TIMES ( AA alkaline cell used )
Recycle time:Approx 3s ( AA alkaline cell used )
Color Temperature:5600k
Flash Time :1/200s - 1/20000s
Flash Control:8 levels of output control ( 1/128 1/1),29 levels of fine tuning
External Interface:External power interface, PC port, hot shoe
Wireless Trigger distance:20-25m indoor, 10-15m outdoor 2.4Gradio transmission distance will up to 100m