Flash mode:TTL/M/MULTI/Rear-Curtain Sync/SLAVE/MASTER/S1/S2
Power source:4xAA Batteries(Alkaline or Ni-MH are usable)
Recycle time:Approx 3s
Color temperature:5600K
Vertical rotation angle:-7 to 90 degrees
Horizontal rotation angle:0 to 360 degrees
External interface:hot shoe,PC port,external charging port
Battery life:100-1500 times ( AA alkaling batteries used)
Wireless triggering distance:15m indoor and 10m outdoor                                                                              
 Flash duration: 1/300 to 1/20000s
 

With wirelss multi-flash control function.
Approx.3s recycling time,compatible with external power pack.
Providing charging socket for external power pack and PC port supported.
With excellent dust and water resistance function.                                                                                        
Supports bounce flash operation.
With large LCD panel, you can look into and set the functions on the LCD panel clearly and directly. 
 
 
The V900 is a high-performance CLS-compatible Speedlite with a large guide number of 58(ISO 100,m).Combined with a CLS-compatible camera,the V900 can  easily perform various types of flash operations,such as i-TTL auto flash and wireless multiple flash.Three types of illumination patterns(standard,center-weighted and even)are available to match different shooting preferences.Power zoom function automatically adjusts the zoom position to match the lens focal length from 18mm to 180mm.When the built-in wide-flash adapter is used or the Diffusion Dome is attached,the zoom position is automatically set to match a wideangle lens with much shorter focal length.Bounce flash or close-up flash photography can be easily performed.Custom functions are provided to allow for various settings.The V900 has been optimized for use with CLS-compatible SLR cameras.CLS-compatible SLR camera:D7000,D700,P7 Series,D300,D200,D80,D70 Series,D60,D50,D40 Series,etc.