Jerry-31 vs Jerry-31S: Key Specifications Comparison
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The Jerry-31 and Jerry-31S are dual-tube Gen 2+ night vision binoculars developed by InfiRay. While both systems share a similar articulating design and core night vision capabilities, the Jerry-31S introduces several upgrades, including Specter 40 optics, expanded battery compatibility, longer runtime, and enhanced environmental protection.
Jerry-31 vs Jerry-31S Specifications
| Specification | Jerry-31 | Jerry-31S |
| Device Type | Dual-Tube Night Vision Binocular | Dual-Tube Night Vision Binocular |
| Image Intensifier Tube | Gen 2+ | Gen 2+ |
| FOM Options | 1400–1600 GP / WP, 1800–2000 WP | 1400–1600 WP, 1800–2000 WP |
| Magnification | 1× | 1× |
| Objective Lens | 25 mm F/1.2 | 27 mm F/1.2 |
| Field of View | 40° | 40° |
| Focus Range | 0.25 m to Infinity | 0.25 m to Infinity |
| Diopter Adjustment | -4 to +2 | -6 to +2 |
| Optics | Standard Optics | Specter 40 Optics |
| PVS-14/31 Optics Compatibility | No | Yes |
| Manual Gain Control | Yes | Yes |
| Bright Source Protection | Yes | Yes |
| Integrated IR Illuminator | Yes | Yes |
| Individual Pod Shut-Off | Yes | Yes |
| Articulating Pods | Yes | Yes |
| Battery Type | AA, External Battery Pack | AA, CR123A, External Battery Pack |
| Runtime (AA Battery) | Up to 20 Hours | Up to 20 Hours |
| Runtime (CR123A Battery) | N/A | Up to 25 Hours |
| Runtime (External Battery Pack) | Up to 50 Hours | Up to 80 Hours |
| Weight | 500 g | 520 g |
| Dimensions | 110 × 97 × 90 mm | 108 × 106 × 83 mm |
| Waterproof Rating | 10 m | 20 m |
Key Differences Between Jerry-31 and Jerry-31S
Overall, the Jerry-31S can be viewed as an upgraded evolution of the Jerry-31. While it is slightly heavier, it offers improved optics compatibility, greater battery flexibility, longer operating time, enhanced environmental protection, and broader tube compatibility, making it the more feature-rich platform of the two models.
Compared with the Jerry-31, the Jerry-31S introduces several notable upgrades:
- Specter 40 optics designed for compatibility with PVS-14 and PVS-31 optical systems
- Dual battery compatibility, supporting both AA and CR123A batteries
- Significantly extended runtime when paired with the optional 18650 battery pack (80 hours vs. 50 hours)
- Wider diopter adjustment range (-6 to +2 vs. -4 to +2)
- Improved ingress protection (20 m vs. 10 m)
- PEEK housing construction provides a lightweight yet highly durable structure
- Compatibility with both MX10160 and 11769 EGAC tubes to support a wider range of image intensifier options
Which Night Vision Binocular Is Better?
For users seeking the lightest and most economical option, the Jerry-31 remains a capable Gen 2+ dual-tube night vision binocular with manual gain control, articulating pods, and integrated IR illumination.
For those looking for enhanced optical compatibility, greater battery flexibility, longer runtime, improved waterproofing, and broader diopter adjustment, the Jerry-31S represents the more advanced platform.