Alpha Optics AO-3251/3351 NV Goggles
Key Features:
- Compact, lightweight, rugged
- Dual-tube design
- True stereoscopic vision
- Head or helmet mounted
- Built-in IR illuminator
- Waterproof
- Automatic bright light shut off
- Comfortable flip-up headgear
- Ergonomic, simple, easy to operate control
- Nitrogen purged
- Hard waterproof case included

Magnification | 1x (3x – optional) |
Image Intensifier Tube | Gen 2+ and Gen 3 |
Field of View | 51° |
Lens System | 19 mm; F/1.26 |
Focus Range | 0.25 m to infinity |
Eye Releif | 17 mm |
Diopter Adjustment | from -6 to +2 |
Led Indicators | Low battery; IR-ON; excessive light |
Infrared Illuminator | YES; Two power levels |
Battery Type | One CR123A (3V) or AA (1.5V) |
Battery Life | Up to 20 hours at 20° |
Operating temperature | -40°C to +50°C |
Environmental Rating | Waterproof |
Dimensions (L x W x H) | 112 x 118 x 74 mm |
Weight | 615 g |
Description
The Alpha Optics AO-3251/3351 is a dual-channel night vision system. With a 51° field of view (FOV), it provides a large visual field without needing to move the binoculars. The AO-3251/3351 uses advanced multi-coated optics and is built to last with a compact composite housing. Operating from a single AA alkaline battery or CR123A battery, it can run up to 20 hours. Also equipped with an integral infrared illuminator for reading in the dark. For hands-free operation, the device includes head and helmet mounting options, it can be used as binoculars, as a monocular, goggles or stowed out of the way. Operated by a single gain control knob, the AO-3251/3351 utilizes features like a flip-up-turn-off, and a flip-down-turn-back-on option when mounted to a helmet.