October is peak season for deer hunters across the United States — and the hours after sunset are when the right light earns its place in the pack. Whether you are trailing a blood trail after a dusk shot, scanning for predators under the moon, or working back at camp, not all light is equal. This guide covers how hunters actually use UV and green light in the field, and which UltraFire lights cover each job.
- Mid-October through November is peak deer season in most U.S. states — and short days mean more hunting happens in low light.
- 365nm UV light makes blood trails easier to spot on leaves and soil after dark.
- Green light lets hunters scan and identify targets without spooking game the way white light does.
- UltraFire RUV3: 365nm UV, 10W output with ZWB2 filter — a blood-trailing specialist.
- UltraFire LG20X PRO: green LED thrower, 4,265-ft beam — long-range scanning for predators.
- UltraFire SZ3: 1,300-lumen swivel-head EDC — hands-free camp and gear work.
Why Light Choice Matters More in October
The season's timing does the work for you:
- Shorter days, longer nights. With daylight saving time ending November 1, more of your hunt — the approach, the wait after a shot, the pack-out — happens in the dark.
- Peak rut is coming. Late October into November is prime time for whitetails, and evening hunts stretch past sunset.
- White light spooks game. Predators and deer notice white beams fast. Colored light — green for scanning, UV for trailing — keeps you quieter in the field.
- Recovery matters. Ethically, the hunt ends when the animal is recovered. The light that helps you find a trail is as important as the one that helps you take the shot.
UltraFire RUV3: The Blood-Tracking Specialist
After a shot at dusk, the difference between recovering an animal and losing a trail is often light. Blood fluoresces under 365nm UV light, standing out against leaves, grass, and soil where white light washes everything into the same shade. A dedicated 365nm source with a ZWB2 filter — which cuts visible purple spill — gives you a cleaner, more readable trail to follow.
UltraFire RUV3 365nm UV Flashlight
The trailing light that lives in your pack. Sweep it low and slow across the ground, mark each drop as you find it, and work the trail one marker at a time.
- 365nm UV output, 10W — tuned for fluorescence
- ZWB2 filter for cleaner UV with less visible spill
- Compact body — rides in a pack pocket all season
How to work a blood trail with UV: Start from the point of impact and scan in widening circles. Keep the beam low to the ground so fluorescence pops against the background. Mark each confirmed drop (a strip of flagging tape or a small stick) before moving on — if you lose the trail, walk back to your last marker and start again instead of wandering. UV is a supplement to reading the trail with your eyes, not a replacement for patience.
UltraFire LG20X PRO: Scan Long, Stay Quiet
Predator hunters live at night — calling coyotes, hogs, and varmints under moonlight. Green light is the classic choice here: it reaches far, it lets you identify a target at distance, and game tolerates it far better than a white beam. The LG20X PRO's deep-throwing green beam was built for exactly this kind of long-range night scanning.
UltraFire LG20X PRO Green LED Flashlight
A long-range green thrower for night scanning and target identification — steady, far-reaching, and built to take field abuse.
- Green LED, 4,265-ft beam, 156,025 candela
- IPX8 waterproof alloy body
- 130-minute runtime, USB-C rechargeable
Scanning technique: Work the beam slowly across fields and tree lines in smooth arcs. When eyes shine back — green works the same way white does for eyeshine — hold the beam just off the animal, identify it clearly, and only then commit to the light. Fast sweeping spooks more game than a steady beam ever will.
UltraFire SZ3: The Camp Light That Does Everything
The hunt doesn't end at the shot. Back at camp or the truck, the jobs change: field-dressing, checking gear, finding the cooler combination, packing up in the dark. That's where a hands-free work light earns its keep — the SZ3's 0–100° swivel head and magnetic tail turn it into a portable work lamp you can stick to the truck bed or aim at your workbench.
UltraFire SZ3 Swivel Head EDC Flashlight | 1300LM CRI90+
The camp multitasker: 1,300 lumens for the walk out, a swivel head and magnet for hands-free work, and USB-C charging that tops up from the truck.
- 1,300 lumens, high-CRI 90+ for true colors
- 0–100° swivel head with spot + flood dual beams
- Magnetic tail for hands-free mounting
- 1,500 mAh battery, USB-C charging (works while charging on low)
- IPX6 waterproof, 1-meter drop resistance, 3-year warranty
Why high CRI matters in camp: A CRI 90+ beam renders blood, hide, and meat in true color — the difference between spotting a missed trail drop and walking past it, and between clean field work and guessing.
RUV3 vs. LG20X PRO vs. SZ3: Which One Is Your Job?
| Feature | RUV3 | LG20X PRO | SZ3 |
|---|---|---|---|
| Light type | 365nm UV | Green LED thrower | White, 1,300 lumens |
| Primary job | Blood-trail tracking | Night scanning, predator hunting | Camp work, pack-out, EDC |
| Standout feature | 10W UV + ZWB2 filter | 4,265-ft beam, 156,025 cd | 0–100° swivel head, magnetic tail |
| Water resistance | — | IPX8 | IPX6 |
| Best for | Deer recovery after the shot | Coyote / hog night hunts | Hands-free field and camp tasks |
Choose the RUV3 if you hunt deer at dusk and want the best shot at recovering every animal you hit.
Choose the LG20X PRO if your season includes predator or hog hunting after dark.
Choose the SZ3 if you want one light that covers camp, the truck, and everything around the hunt.
Most serious hunters end up with two of the three — a scanning/tracking light for the field and an SZ3 for everything else. Browse the full lineup in the UltraFire collection.
Your Night-Hunt Light Checklist
- Primary field light (LG20X PRO for predators, white light for stand approach)
- UV trailing light (RUV3) in the pack from the first sit of the season
- Hands-free work light (SZ3) for camp, field dressing, and the truck
- Trail markers: flagging tape or small stakes for marking blood drops
- Charged power bank + USB-C cable — cold drains batteries faster
- Licenses and tags (check your state's season dates before you go)
- First aid kit, water, and layers for temperature swings after sunset
Charge Before the Season, Not During
Cold weather shortens lithium battery runtime, so a light that's "fine" in the garage can fade faster in the field. Top off every light the night before the opener, pack the charger, and keep a power bank in the truck. Store lights where you can find them without light — the tailgate tray, the same pack pocket, every time.
- Know your target. Always identify what is behind and beyond it before any shot — green light or not.
- Never shine at faces. UV and high-intensity beams can harm eyes; keep all beams on the ground or on targets, never on people.
- UV is for tracking, not targeting. Use the RUV3 to find trails, not to identify or shoot at game.
- Follow local regulations. Hunting hours, artificial light rules, and legal game vary by state — check before you go.
- Tell someone your plan. Where you're going, when you'll be back, and who to call if you aren't.
Final Thoughts
October and November hand hunters their best weeks of the year — and their darkest. The right lights don't just make the night huntable; they make it ethical, from the moment you scan a field to the moment you recover your animal. Pack the RUV3 for the trail, the LG20X PRO for the night, and the SZ3 for everything else — and hunt the whole season, not just the daylight hours.
