| Product ID | DST21M |
| Category | Red Dot |
| Magnification | 1X |
| Objective Lens Diameter | 26×20 mm |
| Lens Coating | Multi-coated |
| Click Value | 0.5moa/click |
| Adjustment Range | ≥55moa |
| Parallax | ≤2moa |
| Parallax Distense | 50 m |
| Retical | 2moa Dot & 40moa Circle |
| Battery | AAA, 2x |
| Brightness | 9 daytime / 2 Night Vision |
| Sleep Mode | 3 min |
| Reticle Color | RED |
| Housing Material | Aluminium 6061-T6 |
| Finish | Matt |
| Color | Black |
| Length | 89 mm |
| Width | 35 mm |
| Height | 55 mm |
| Mount | MIL-STD-1913 |
| Shockproof | 1000 G |
| WaterProof | IP67 |
