PVS-31 Low-Light Night Vision Binocular Gen2+ FOM ~1200 (Green / White Phosphor Selectable)
PVS-31 Low-Light Night Vision Binocular Gen2+ FOM ~1200 (Green / White Phosphor Selectable)
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A binocular low-light night vision in the PVS-31 form factor. Built around an internationally sourced European military-grade Gen2+ intensifier tube (FOM approx. 1200), this is a serious, field-ready unit that excels in extreme darkness. Choose the configuration that fits your use case from the available combinations of phosphor type (green tube / white tube) and auto-gating.
The core hardware (optics, housing, power, water resistance) is identical across all three configurations. Simply pick the phosphor-and-auto-gating combination that best suits how you operate. The flagship is the "white tube + auto-gating" build — a top-tier configuration that pairs natural grayscale imaging with all-day operating comfort.
🔍 Configuration Comparison
| Green Tube with Auto-Gating |
Green Tube No Auto-Gating |
White Tube with Auto-Gating |
|
|---|---|---|---|
| Phosphor Type | Green Tube | Green Tube | White Tube (White Phosphor) |
| FOM | Approx. 1200 | Approx. 1200 | Approx. 1200 |
| Auto-Gating | Yes | No | Yes |
| Comfort Over Long Sessions | Standard | Standard | Widely rated as less fatiguing |
| Spec Data | Individual parameter values provided after purchase | No parameter data provided | Individual parameter values provided after purchase |
| Other Specs | Core hardware is identical across all three (only tube color, auto-gating, and parameter availability differ) | ||
🌟 About Phosphor Types — Green Tube vs. White Tube
This lineup offers both the classic green tube (green-glow image) and the increasingly popular white tube (white phosphor) (white-to-gray tonal image).
Why People Choose the White Tube
- Easier on the eyes over long sessions — many operators and nighttime-training users rate white phosphor as far less fatiguing on extended missions
- More natural grayscale imaging — rendered in white, gray, and black rather than single-tone green, it sits closer to daytime vision and lets you process what you see more intuitively
- Better for sustained focus — ideal for long-wear use cases such as watch duty and extended airsoft games
About Auto-Gating
Auto-gating protects the intensifier tube while keeping your view usable when a bright light source (car headlights, indoor lighting, etc.) suddenly enters the frame. The auto-gating build has the edge for moving between urban, indoor, and outdoor environments, while the non-gated build works perfectly well for forest, rural, and other settings with little change in light.
About the Price Difference
White phosphor is harder to produce than green — the white emitter coating process and yield management are more demanding, which raises manufacturing cost and sets a different price point. The presence or absence of the auto-gating mechanism is also reflected in the price. White tube + auto-gating is the top configuration in this lineup. The price difference is an investment in experience: a more natural view and the comfort of all-day operation.
🔧 Shared Specifications
| Phosphor Type | Green tube / white tube (white phosphor) — your choice |
|---|---|
| Intensifier Generation | Gen2+ (equivalent to FOM approx. 1200) |
| Power | 14500 lithium battery × 1 |
| Continuous Runtime | Up to approx. 20 hours |
| Water Resistance | IP65 equivalent |
| Weight | Approx. 560g |
| Other Features | Automatic power-off on flip-up |
✨ Product Highlights
- Field-of-view condition is selected to good, in-spec quality. Virtually unnoticeable in normal use, with no impact on nighttime visibility
- Optics are compatible with nearly the entire PVS-14 lens family. Custom lenses can be used
- Binocular stereo vision delivers a night view with real depth perception
- For stargazing, reveals far finer stars than the naked eye can see
📦 What's in the Box
- Night vision unit
- Eyepiece protective cap / light-reduction cap
- Batteries (spare included)
- Charger
- Storage case
- Random bonus accessory
* If you choose an auto-gating build (green or white tube), we'll send you the individual parameter values (FOM, S/N ratio, resolution, and other figures) by message after we confirm your purchase.
* Please note that, per our supplier's policy, we do not hand over the parameter sheet (the original certificate) itself.
🌐 Component Supply Chain
- Image Intensifier: Made by an overseas manufacturer to European military standards. Delivers solid Gen2+-class real-world performance.
- Optics (objective & eyepiece lenses): Made by a well-known overseas optics manufacturer. Compatible with the main PVS-14 lens family.
- Housing & Chassis: Molded and machined by an overseas OEM partner.
Unless otherwise noted, the image intensifier tube was manufactured in 2025 — a fresh, recent lot you can rely on for years.
🛡 Warranty & After-Sales Support
- Lifetime warranty, no expiry: free repair or replacement for natural faults
- Cross-store coverage: products bought at any Kakihiro-affiliated store (kakihiro.jp / Mercari / Rakuma / Yahoo! Flea Market) are covered regardless of store
🚚 Shipping
⚠ Before You Use It
- This product is sold as airsoft, survival-game, and nighttime outdoor gear.
- No special license or permit is required to own or use this in Japan. Just check each field's local rules to be safe.
- Avoid pointing the device at direct daylight or strong light sources, as this can damage it.
Our shop (seller: Kakihiro) has earned 278 ratings on Mercari — every one of the latest 100 rated "Good" — and 136 "Good" ratings on Yahoo! Flea Market (out of 138). Below are a few of the actual reviews we have received.
A wonderful product arrived! Even clearer than the listing video — I was impressed!
tam / Yahoo! Flea Market / Apr 2026
Both eyepiece and objective were clean, no fixed dirt — confirmed everything was fine.
あかぺー / Yahoo! Flea Market / Dec 2025
A truly excellent product. I'll be recommending it to friends.
やまちゃん / Mercari / Jan 2026
Sources: Mercari reviews / Yahoo! Flea Market reviews (publicly verifiable)
Before purchasing
Product Support Information
About shipping
As this is a precision instrument, it will be carefully packaged and shipped via Yamato Transport or Sagawa Express. We will ship within 24 hours (weekdays only) after confirming your payment. Free shipping nationwide. For details, please see our Shipping Guide.
Unlimited lifetime warranty + cross-store warranty
All products purchased at Kakihiro stores (Shopify Official / Mercari / Rakuma / Yahoo! Flea Market, etc.) are covered by a lifetime warranty with no expiration date. The answer to "How long is the warranty?" is always "There is no expiration date."
Regardless of which store you purchased your product from, if you contact Kakihiro, we will repair, adjust, or replace parts. DJI drones also come with a full coverage service for DJI official repair costs (no expiration date, regardless of human error or not). Please see the Warranty Policy for details.
Care and Storage Instructions
As this is precision equipment, please store it in an environment with 40-60% humidity and 5-30°C temperature. Lightly wipe the lens with a microfiber cloth. Never power on the vacuum tube model in a brightly lit place. For digital models, powering them on about once a month can prevent deterioration. For details, please see the care guide.
Inquire about this product
If you have any questions regarding model selection or specifications, please feel free to contact us via the inquiry form. Including the product name and SKU in your message will help us respond more smoothly.
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