| Model | 250S | GL-3001 | 250L | 250XL | |
| Magnification | 2.5X | 2.5X | 2.5X | 2.5X | |
| Working distance | 340mm | 420mm | 500mm | 550mm | |
| Depth of Field | 80mm | 90mm | 110mm | 120mm | |
| Field of View | 90mm | 100mm | 110mm | 120mm | |
| Weight | 42g | 42g | 42g | 42g | |
| Frames | Ni-alloy or Titanium or Goggles | ||||
| Model | 300S | GL-3002 | 300L | 300XL | |
| Magnification | 3.0X | 3.0X | 3.0X | 3.0X | |
| Working distance | 340mm | 420mm | 500mm(L) | 550mm | |
| Depth of Field | 60mm | 80mm | 90mm | 100mm | |
| Field of View | 60mm | 65mm | 70mm | 75mm | |
| Weight | 48g | 48g | 48g | 48g | |
| Frames | Ni-alloy or Titanium or Goggles | ||||
