| Model | RED100 | RED120 | RED130 | RED132 |
| Observation tube | Monocular head | Monocular head | Monocular head | Binocular head, Siedentopf type |
| Optical system | Finite optical system, 160mm | Finite optical system, 160mm | Finite optical system, 160mm | Finite optical system, 160mm |
| Inclination | 45º inclined, 360º rotating | 45º inclined, 360º rotating | 45º inclined, 360º rotating | 30º inclined, 360º rotating |
| Interpupillary distance | - | - | - | 55-75mm |
| Diopter adjustment | - | - | - | On left tube, +/- 5 diopter |
| Eyepieces | Widefield WF10X/18mm with pointer, lockable | Widefield WF10X/18mm with pointer, lockable | Widefield WF10X/18mm with pointer, lockable | Widefield WF10X/18mm with pointer, lockable |
| Nosepiece | Reversed triple | Reversed quadruple | Reversed quadruple | Reversed quadruple |
| Objective classification | EA Achromatic, DIN | EA Achromatic, DIN | EA Achromatic, DIN | EA Achromatic, DIN |
| Objectives | 4X/0.10 (WD 27mm), 10X/0.25 (WD 5mm), 40X/0.65/S (WD 0.3mm) | 4X/0.10 (WD 27mm), 10X/0.25 (WD 5mm), 40X/0.65/S (WD 0.3mm), 100X/1.25/S-Oil (WD 0.06mm) | 4X/0.10 (WD 27mm), 10X/0.25 (WD 5mm), 40X/0.65/S (WD 0.3mm), 100X/1.25/S-Oil (WD 0.06mm) | 4X/0.10 (WD 27mm), 10X/0.25 (WD 5mm), 40X/0.65/S (WD 0.3mm), 100X/1.25/S-Oil (WD 0.06mm) |
| Objective mounting thread | W 4/5" x 1/36" (RMS standard) | W 4/5" x 1/36" (RMS standard) | W 4/5" x 1/36" (RMS standard) | W 4/5" x 1/36" (RMS standard) |
| Stand type | Upright | Upright | Upright | Upright |
| Stage | Gliding stage with “one-touch” sample clips | Mechanical stage with built-in low position coaxial stage control and sample holder | Mechanical stage with built-in low position coaxial stage control and sample holder | Mechanical stage with built-in low position coaxial stage control and sample holder |
| Stage size | 110 x 110mm | 120 x 120mm | 120 x 120mm | 120 x 120mm |
| Travel range X&Y | - | 77 x 25mm | 77 x 25mm | 77 x 25mm |
| Condenser | Built-in condenser lens N.A. 0.65 | Spiral mounted Abbe condenser N.A. 1.25 | Spiral mounted Abbe condenser N.A. 1.25 | Spiral mounted Abbe condenser N.A. 1.25 |
| Diaphragm | Iris diaphragm | Iris diaphragm | Iris diaphragm | Iris diaphragm |
| Focus mechanism | Separate coarse and fine focusing system with tension adjustment | Separate coarse and fine focusing system with tension adjustment | Coaxial coarse and fine focusing system | Coaxial coarse and fine focusing system |
| Fine focus precision | 2µm | 2µm | 2µm | 2µm |
| Focusing stroke | 13mm | 7mm | 7mm | 7mm |
| Upper limit stop | Upper limit stop preset but adjustable | Upper limit stop preset but adjustable | Upper limit stop preset but adjustable | Upper limit stop preset but adjustable |
| Filter | Built-in frosted glass | Built-in frosted glass | Built-in frosted glass | Built-in frosted glass |
| Transmitted illumination | LED 3.5V/70mW with intensity control | LED 3.5V/70mW with intensity control | LED 3.5V/70mW with intensity control | LED 3.5V/70mW with intensity control |
| Transformer | External | External | External | External |
| Power supply | Charger 100-240V or rechargeable batteries (CE) | Charger 100-240V or rechargeable batteries (CE) | Charger 100-240V or rechargeable batteries (CE) | Charger 100-240V or rechargeable batteries (CE) |
| Accessories included | Dust cover, charger, batteries | Dust cover, 5mL immersion oil, charger, batteries | Dust cover, 5mL immersion oil, charger, batteries | Dust cover, 5mL immersion oil, charger, batteries |
| Dimensions, L x W x H | 234 x 152 x 334mm | 234 x 152 x 334mm | 234 x 152 x 334mm | 234 x 152 x 334mm |
| Weight Net | 4.7kg | 4.7kg | 4.7kg | 4.7kg |
| Standard contrast technique | Brightfield | Brightfield | Brightfield | Brightfield |