China Night Vision Portable Binocular HP-Nb2021 Thermal Image Device, Find details about China Night Vision, Night Vision Binocular from Night Vision Portable Binocular HP-Nb2021 Thermal Image Device
Model | NB2021 | NB3021 |
Enhancement Tube | Gen2+ | Gen3 |
Resolution (lp/mm) | 48-65 | 65-72 |
Cathode Surface | S25 | Gallium Arsenide |
Signal to Noise Ratio (dB) | 17-21 | 21-24 |
Optical Sensitivity (microampere/lumens) | 550-650 | 1500-1800 |
Trouble-free Time(h) | 10000 | 10000 |
Magnification | 1x | 1x |
FOV | 40° | 40° |
Diopter Adjustment Range | +5/-5 | +5/-5 |
Lens system(mm) | F1.2, 25.8 | F1.2, 25.8 |
Objective Lens Adjustment Range | 0.25-∞ | 0.25-∞ |
Volume(mm) | 142X110X55 | 142X110X55 |
Weight(g) | 798(1100 with helmet) | 798(1100with helmet) |
Power Supply Voltage (V) | 2.0-4.2 | 2.0-4.2V |
Battery Type | 1X CR123A Lithium BatteryOR AA X1 | 1X CR123A Lithium BatteryOR AA X1 |
Continuous working time (h) | 80(Without Infrared) | 80(Without Infrared) |
40(Infrared) | 40(Infrared) | |
Operational temp.(°C ) | -40/+60 | -40/+60 |
Dustproof and Waterproof Grade | IP68(Optional Accessories) | IP68(Optional Accessories) |