Technical features:
* Item: 300S, 300R, 300L, 300XL
* Power: 3. 0x
* Working distance: 340mm (S) , 420mm (R) , 500mm (L) , 550mm (XL)
* Depth of view: 60mm (S) ; 80mm (R) ; 90mm (L) ; 100mm (XL)
* Field of View: 60mm (S) ; 80mm (R) ; 90mm (L) ; 100mm (XL)
* Weight: 48g
* Frames: Ni-alloy or Titanium
Technical features:
* Item: 300S, 300R, 300L, 300XL
* Power: 3. 0x
* Working distance: 340mm (S)