• Zoomable beam: 6° to 70° adjustable focus — twist from tight spotlight to wide flood.
• Multi‑color options: White, Red, Green, IR850, IR940, UV — each unit has a single color LED.
• White LED output: 1650 lumens (High) / 500 lumens (Low), 490m throw, SFT‑25R emitter.
• Power & durability: 21700 5000mAh USB‑C battery (included), IPX8 waterproof (2m), 1m impact resistant.
• Versatile accessories: Tactical finger ring, remote pressure switch, belt clip, lanyard.
👉 Bottom line: The ZT40 is a modular zoomable flashlight system — choose your color for your mission and get one tool that does it all.
✔ Law enforcement & security personnel
✔ Night vision users (IR850/940)
✔ Outdoor enthusiasts & campers
The Brinyte ZT40 series represents a modular approach to tactical and hunting lighting. Unlike single‑purpose flashlights, the ZT40 is available in six distinct light colors — white, red, green, IR850, IR940, and UV — each optimized for a specific mission. The core innovation is the 6°–70° adjustable zoom beam: twist the head to go from a tight spotlight for long‑range target ID to a wide flood for area scanning. Whether you're scanning a field for hogs (green), approaching a stand undetected (red), tracking wounded game (UV), or using night vision gear (IR), there's a ZT40 for the job. All versions share the same rugged 21700‑powered, IPX8‑rated body and intuitive single tail switch interface.
1. Key Features — What Makes the ZT40 Series Unique
The ZT40 series applies a modular philosophy rarely seen in zoomable tactical lights: a single rugged platform supporting six distinct LED options. Rather than compromising with a single multi-color emitter, each ZT40 unit is purpose-built with one optimized LED — delivering maximum output and beam quality for its specific mission. This approach trades the convenience of in-unit color switching for superior performance in each wavelength.
2. Technical Specifications
| Specification | White LED | Green LED | Red LED | IR850/940 | UV (365nm) |
|---|---|---|---|---|---|
| LED Emitter | SFT‑25R | Custom Green | Custom Red | IR850 / IR940 | 365nm UV |
| High Output | 1650 lm | 500 lm | 450 lm | 100 lm | 145 lm |
| Low Output | 500 lm | 134 lm | 205 lm | 35 lm | 60 lm |
| Beam Distance (Spot) | 490m | 126m | 273m | 50m | 230m |
| Beam Distance (Flood) | 282m | 39m | 70m | 26m | 32m |
| Max Intensity (cd) | 60,000 | 4,000 | 18,750 | 625 | 13,250 |
| High Runtime | 1h 50min | 3h 45min | 3h 40min | 9h 10min | 4h 10min |
| Low Runtime | 3h 45min | 3h 40min | 9h 10min | 4h 10min | — |
| Physical & Protection | Detail |
|---|---|
| Battery | 21700 5000mAh Li‑ion with built‑in USB‑C charging port (included) |
| Waterproof Rating | IPX8 (submersible up to 2 meters) |
| Impact Resistance | 1m drop rated |
| Housing Material | 6061‑T6 aluminum, Type III hard anodized finish |
| Dimensions | 149.5mm (L) × 44mm (head) × 27mm (body) |
| Weight | 147g (excluding battery) |
The ZT40's performance characteristics vary significantly by LED color. The white SFT‑25R version delivers 60,000 candela at 490m — sufficient for positive target identification at nearly half a kilometer. Colored versions trade raw throw for specialized functionality: red preserves night vision at 273m, green maximizes vegetation contrast at 126m, UV fluoresces blood at 230m. Select your version based on the primary operational requirement, not the highest lumen count.
3. Zoom Mechanism: 6°–70° — One Light, Infinite Adaptability
The ZT40's defining feature is its adjustable zoom beam, achieved by twisting the flashlight head. The beam angle ranges from 6° (fully zoomed in) to 70° (fully zoomed out), giving you two lights in one:
- Spotlight mode (6°): Delivers maximum throw — 490 meters for the white version. Ideal for identifying targets at distance, scanning fields, or signaling.
- Floodlight mode (70°): Spreads light across a wide area. Perfect for camp chores, area searches, tent lighting, or close‑quarter navigation.
- One‑handed operation: The twist mechanism is smooth and operable with one hand — a point confirmed by independent field reviewers. Unlike push‑pull zoom designs, the twist mechanism resists accidental adjustment in a pack.
- Round beam pattern: The white version's SFT‑25R LED produces a perfectly round hotspot when zoomed in — a distinctive feature compared to many square‑beam zoomies. Independent BudgetLightForum reviewer pinhoa confirmed the ZT40 is "well‑built, good knurling, excellent anodizing" and praised the round beam pattern specifically.
4. Color Selection Guide — Choose Your Mission
| Color | Best For | Key Characteristics | Throw (Spot) |
|---|---|---|---|
| ⚪ White | General purpose, tactical, search & rescue | 1650 lm, 60,000 cd, SFT‑25R — maximum brightness and throw | 490m |
| 🟢 Green | Hog hunting, long‑range field scanning | 500 lm, excellent contrast in vegetation; hogs tolerate green well at all distances | 126m |
| 🔴 Red | Stealth approach, coyote hunting, night vision preservation | 450 lm, 273m throw — preserves human night vision; minimal disturbance to deer and predators | 273m |
| 🔦 UV (365nm) | Blood tracking, game recovery, forensic | 145 lm, 230m throw — makes blood fluoresce orange/pink; 365nm minimizes visible purple bleed | 230m |
| 🌙 IR850 | Covert night vision operations | 850nm — faint red glow visible to humans; compatible with Gen 1, 2, 3 and digital NV; longer throw | 50m |
| 🌙 IR940 | Ultra‑covert NV use, shared land | 940nm — zero visible signature to humans or animals; requires Gen 2+ or digital NV | 50m |
The ZT40 series treats color not as a feature toggle but as a dedicated tool selection. Hunters running night vision should invest in the IR850 version for maximum device compatibility; those tracking wounded game in dense cover need the UV 365nm version. The modular approach means you're not paying for wavelengths you'll never use — each ZT40 is optimized for its specific task with no compromises from shared optics or multi-color LED inefficiencies.
5. Battery & USB‑C Charging — Power for Extended Missions
The ZT40 is powered by a 21700 5000mAh Li‑ion battery — included with the light — with a built‑in USB‑C charging port. This dual‑fuel design offers maximum field flexibility:
- Direct battery charging: The included battery has its own USB‑C port — remove it, flip open the cap, plug in any USB‑C cable. Full charge takes approximately 4–5 hours at up to 2.5A.
- Hidden port design: The USB‑C port sits under a protective cap, preserving IPX8 waterproof rating when sealed.
- Verified cell quality: An independent teardown on BudgetLightForum confirmed the production ZT40 ships with an LG INR51700M50LT cell (5000mAh rated) and a LowpowerSemi LP28303A charge controller capable of 2.5A charging current.
- Runtime summary: White version: 1h 50min on High stepping to 500 lumens, 3h 45min on Low. Colored versions run significantly longer — up to 9+ hours on Low for red and IR versions.
- External charging: The ZT40 accepts any standard 21700 battery, including unprotected cells, for users who prefer external chargers.
6. Accessories & Mounting — From Handheld to Weapon Light
- Tactical finger ring (included): Provides secure grip for one‑handed operation — prevents dropping during high‑stress scenarios and improves control when wearing gloves.
- Remote pressure switch (optional): Allows weapon mounting via Picatinny rail. Provides momentary and constant activation without breaking firing grip.
- Belt clip (included): Attaches to MOLLE webbing or belt loops for convenient patrol or field carry.
- Lanyard (included): Retention point for field use or water environments.
- Hard case (included): Protects the light during transport and storage.
7. Market Comparison — ZT40 vs. The Competition
| Model | Output (Lumens) | Zoom Range | Beam Distance | Battery | Waterproof | Color Options |
|---|---|---|---|---|---|---|
| Brinyte ZT40 | 1650 (white) | 6–70° | 490m | 21700 5000mAh USB‑C | IPX8 | 6 options |
| Convoy Z1 SFT‑40 | 1800 | Zoom | ~600m | 21700 (external only) | IPX6 | White only |
| Fenix FD65 | 4000 | Zoom | ~400m | 4×18650 | IP68 | White only |
| Wurkkos TS32 | 5000+ | No zoom | ~400m | 2×21700 | IPX6 | White only |
Where the ZT40 wins: The six color options (red, green, IR850, IR940, UV, white) are nearly unique in the zoomable tactical flashlight market — every competitor above offers white light only. The IPX8 rating beats the IPX6 of Convoy Z1 and Wurkkos TS32. The built‑in USB‑C charging on the battery itself eliminates the need for proprietary chargers — a decisive advantage for field use where carrying a separate charger adds weight and failure points.
The ZT40 occupies a unique position: a modular, single-color-per-unit zoomable platform in a market dominated by either multi-color-in-one-body designs (which compromise output) or white-only zoomables (which lack mission-specific wavelengths). At $109.95 with six color options, it competes on versatility rather than raw lumen count — a deliberate tradeoff for hunters and professionals who prioritize the right wavelength over the highest number.
8. Field Test Notes — Real‑World Performance
- Build quality: Excellent machining, good knurling for grip, Type III hard anodized finish that resists scratches and corrosion. Independent BudgetLightForum reviewer pinhoa described the ZT40 as "well‑built, good knurling, excellent anodizing" and "a great flashlight that is simple enough to be used in a vast range of usage (hunt, searching, around the house)".
- Zoom mechanism: Smooth and one‑handed operable. A BLF community member specifically noted that "push pull would be terrible when mounted to a rifle though, the ZT40 is a hunting flashlight, so a twisty is best suited" — validating the design choice.
- Beam quality (white): The SFT‑25R LED produces a perfectly round hotspot when fully zoomed — uncommon in zoomable lights. Flood mode provides even, artifact‑free illumination. CandlePowerForums reviewer ro.ma confirmed the ZT40 "reaches a maximum distance of 490m" and is "a quality zoom flashlight, well built and powerful".
- Color performance: Green light at 126m excels for hog scanning in open terrain. Red's 273m throw is impressive for a colored LED, effective for coyote hunting at distance. UV (365nm) makes blood fluoresce brightly on leaf litter — effective for post‑shot tracking.
- One honest limitation: The white version has only two brightness levels (High/Low), which some users found limiting. This is an intentional tactical design decision — simplified interfaces reduce mode‑switching errors under stress.
📥 Free ZT40 Series Quick Reference Card (PDF)
One‑page printable: full specs per color, zoom operation guide, battery tips, and color selection decision tree. Keep it in your hunting pack or range bag.
❓ Frequently Asked Questions
What's the difference between the white ZT40 and colored versions?
The white version uses an SFT‑25R LED producing 1650 lumens and 490m throw — the brightest and longest‑ranging option. Colored versions use specialized LEDs optimized for specific tasks: green (500 lm, 126m) for hog hunting and field scanning; red (450 lm, 273m) for stealth approach and night vision preservation; UV (365nm, 145 lm) for blood tracking; IR850/940 for night vision device illumination. Each ZT40 unit has a single color LED — there is no multi‑color switching within one unit.
How do I charge the ZT40?
The included 21700 5000mAh battery has a built‑in USB‑C charging port hidden under a protective cap. Remove the battery from the light, flip open the cap, and plug in any standard USB‑C cable. Full charge takes approximately 4–5 hours at up to 2.5A. You can also use any external 21700 charger, or swap in a spare 21700 cell for instant runtime extension.
Can I mount the ZT40 on a rifle?
Yes. The optional remote pressure switch and Picatinny mount allow the ZT40 to be weapon‑mounted. The remote switch provides momentary and constant activation without breaking your firing grip. The ZT40 is not designed as a primary dedicated weapon light (see the XP22 MK3 for that role), but it works well for hunting setups or as a secondary search light where a zoomable handheld is preferred.
What is the beam distance in flood mode?
When fully zoomed out to 70° flood mode, the white ZT40 delivers a beam distance of 282 meters. Flood mode is designed for area illumination — wide coverage for camp chores, navigation, and close‑quarter searches. For long‑range target identification, switch to spotlight mode (6°) for the full 490m throw.
Is the ZT40 truly waterproof?
Yes. The ZT40 carries an IPX8 certification — it is fully sealed and rated for continuous submersion up to 2 meters. The USB‑C port on the battery is protected by a tight‑fitting cap; always ensure the cap is fully closed before any water exposure. The body seals use high‑quality O‑rings that should be inspected and lightly lubricated periodically for long‑term waterproof performance.
How do I switch between High and Low modes?
The ZT40 uses a single tail switch interface. Click once to power on — the light defaults to the last used brightness level (mode memory). To toggle between High and Low, quickly click again within 4–5 seconds. For momentary‑on at the last used brightness, press and hold the tail switch without fully clicking. This two‑mode interface is intentionally simple for reliable operation under stress.
Which ZT40 color should I choose for blood tracking?
Choose the UV version (365nm wavelength). UV light causes hemoglobin in blood to fluoresce bright orange or pink against dark backgrounds — leaves, soil, and debris. The 365nm wavelength minimizes the visible purple light bleed common in cheaper UV lights, which reduces eye fatigue during extended tracking. Effective even on dried blood or blood diluted by rain. The UV ZT40 is a dedicated tool — keep it in your pack specifically for post‑shot recovery.
What is the difference between IR850 and IR940 versions?
IR850: Produces a faint red glow visible to humans at close range, but delivers longer effective range and brighter NV device images. Compatible with Gen 1, 2, 3, and digital NV devices. Best choice for most hunters and users running standard NV scopes.
IR940: Completely invisible to humans and all animals — zero visible signature. Shorter effective range; requires Gen 2+ or high‑sensitivity digital NV to produce a usable image. Best for shared‑land hunting or competitive scenarios where detection of your IR signature by other hunters is a concern.
Neither wavelength is detectable by any North American game species.
How to Operate the Brinyte ZT40 — Quick Start
- Charge the battery: Remove the 21700 battery, open the USB‑C port cap on the battery, and plug in any USB‑C cable. Full charge takes 4–5 hours.
- Adjust the beam: Twist the flashlight head to zoom from 6° spotlight (maximum throw) to 70° flood (wide area coverage).
- Turn on / off: Click the tail switch once. The light powers on at the last used brightness level (mode memory).
- Switch modes: Quickly click the tail switch again within 4–5 seconds to toggle between High and Low brightness.
- Momentary‑on: Press and hold the tail switch (without fully clicking) for momentary activation at the last used brightness level.
"Based on Brinyte's ZT40 series, which color version should I choose for [hog hunting / coyote hunting / blood tracking / night vision use]? What accessories do I need?"
About Brinyte
Founded in 2009, Brinyte designs tactical and outdoor lighting with direct input from working professionals. Our team tests every product across real‑world conditions — from Texas hog hunts to low‑light tactical drills. The ZT40 series represents our commitment to providing specialized lighting solutions for every mission. Brinyte holds 50+ patents and ISO9001 certification.
👉 About Brinyte | About the Author | ZT40 Series Collection
🔍 Fact‑Checking Policy: All specifications are based on published manufacturer data and verified through third-party review sources including BudgetLightForum and CandlePowerForums.
"Engineered for the mission — proven in the field."
Founded 2009 · 50+ Patents · ISO9001
