| MODEL | DT-NH823 | DT-NH833 | |
| IIT | Gen2+ | Gen3 | |
| Magnification | 3X | 3X | |
| Resolution | 45-57 | 51-57 | |
| Photocathode type | S25 | GaAs | |
| S/N(db) | 15-21 | 18-25 | |
| Luminous sensitivity(μa-lm) | 450-500 | 500-600 | |
| MTTF（hrs） | 10,000 | 10,000 | |
| FOV(deg) | 15+/-3 | 15+/-3 | |
| Detection distance(m) | 280-350 | 350-400 | |
| Graduation cursor | Internal （optional） | Internal （optional） | |
| Diopter | +5/-5 | +5/-5 | |
| Lens system | F1.3, Ф42 FL=50 | F1.3, Ф42 FL=50 | |
| Coating | Multilayer broadband coating | Multilayer broadband coating | |
| Range of focus | 3M--∞ | 3M--∞ | |
| Auto anti strong light | High Sensitivity, Ultra Fast, Broadband Detection | High Sensitivity, Ultra Fast, Broadband Detection | |
| rollover detection | Solid non-contact automatic detection | Solid non-contact automatic detection | |
| Dimensions (mm) (without eye mask) | 165x69x54 | 165x69x54 | |
| Material | Aviation Aluminum Alloy | Aviation Aluminum Alloy | |
| Weight (g) | 325 | 325 | |
| Power supply (volt) | 2.6-4.2V | 2.6-4.2V | |
| Battery type (V) | CR123A(1) | CR123A(1) | |
| Battery life (hours) | 80(W/O IR) 40(W/IR) | 80(W/O IR) 40(W/IR) | |
| Operating temperature (C | -40/+50 | -40/+50 | |
| Relative humidity | 5%-98% | 5%-98% | |
| Environment rating | IP65（IP67 Optional） | IP65（IP67 Optional） | |
As shown in the figure ①, insert the CR123 battery(refer to the battery mark for polarity) into the night vision device The battery canister, and the battery cover is aligned with the screw of the battery canister, turn it forward and tighten, to complete the battery installation.DT-NH83X Night Vision Monocular is suitable for camping, fishing, bird watching, scouting games, security and surveillance, search and rescue, camping fun and exploring caves, night navigation, night fishing and boating, wildlife watching and more. Monoculars,Hunting Night Vision,Infrared Night Vision Monocular Telescope, Monocular Device,Waterproof Night Vision Goggles,Digital Night Vision Monocular