GOYOJO GNG2K
#2 in MonocularsFull review
A high-resolution, helmet-mountable monocular for hands-free night navigation on trails and private land. The maker publishes no battery life or water rating.
Amazon $549$549
The GOYOJO GNG2K rates 3.5 among monoculars digital night vision devices; the Firefield Hexcore HD 1-3x rates 2.5 among binoculars and goggles ones. The Firefield Hexcore HD 1-3x costs $333.03 less ($215.97 vs $549).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Firefield Hexcore HD 1-3x
A binocular that doubles as head-mounted goggles, for walking and camp use as well as watching from one spot. Battery life with the IR turned up is short.
Amazon $215.97$215.97
Scores side by side
These two sit in different type classes (monoculars and binoculars and goggles), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | GOYOJO GNG2K | Firefield Hexcore HD 1-3x |
|---|---|---|
| Overall rating | 3.5/5 | 2.5/5 |
| Image 25% | 100 2688 x 1520 sensor | 40 1280 x 720 sensor, 640 x 360 screen |
| Optics 15% | 70 1x optical, 45° view | 20 1x optical, 20° view |
| Runtime 15% | 50 runtime not published (neutral score used) | 0 1.5 h stated runtime |
| Value 15% | 4 $549 | 44 $215.97 |
| Waterproofing 10% | 50 water resistance not published (neutral score used) | 0 not water resistant |
| Warranty 10% | 25 2-year warranty | 50 3-year warranty |
| Recording 5% | 50 recording not published (neutral score used) | 39 records 720p |
| Claimed range 5% | 74 984 ft claimed | 49 657 ft claimed |
Specifications
| GOYOJO GNG2K | Firefield Hexcore HD 1-3x | |
|---|---|---|
| Image | ||
| Type | Monocular | Goggles |
| Sensor | 0.0001 lux low-light sensor | CMOS |
| Sensor resolution | 2688 x 1520 | 1280 x 720 |
| Screen resolution | - | 640 x 360 |
| Optics | ||
| Optical magnification | 1x | 1x |
| Digital zoom | 4x | 3x |
| Field of view | 45 ° | 20 ° |
| IR illuminator | 940 nm | 850 nm |
| Claimed range in darkness | 984 ft | 657 ft |
| Recording and power | ||
| Video recording | - | 720p |
| Phone app / Wi-Fi | - | No |
| Battery | - | 4 x AA (included) |
| Runtime at night | - | 1.5 h |
| Build | ||
| Head mount included | Yes | Yes |
| Water protection | - | No |
| Weight | 13.6 oz | 19.1 oz |
| Warranty | 2 years | 3 years |