for Sony a100 a200 a300 a350 a700 a900 and Minolta a5D, a7D, a5, a7
  
It is the best recommandation as a slave flash for photography. 
It has Optical Slave and Fully Manual function, and most important, the GN number is increased to 53.
 
 Technical parameters: 
* Guide number: 
* 38 (at 35mm focal length, ISO 100 in meters) 
* 53 (at 35mm focal length, ISO 200 in meters) 
* Flash mode: M, S1, S2 
* Flash power control : Level 46 light quantity output control with 1/7-stop increment 
* Circuit design: Insulated Gate Bipolar Transistor (IGBT) 
* Vertical rotation angle : -7~90 degrees 
* Horizontal rotation angle : 0~270 degrees 
* Power: 4 x AAsize batteries (Alkaline or Ni-MH are usable) 
* Lighting times: 100 to 1500 times (AA alkaline cell used) 
* Recycle time: approx 4s (AA alkaline cell used) 
* Color temperature : 5600k 
* Flash time :1/800s~1/20000s 
* Dimensions: 72 x 135 x 85mm 
* Net weight: 250g
 
10 working days delivery lead time from Malaysia.