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Turns 500 Yards of Dark Into Daylight

Cosari Helios X10

Flood your whole backyard in white light, then slide the head forward to reach the tree line 500 meters out.

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  • 10,000 peak lumens with 500m spotlight throw
  • Slide-to-zoom from 120° flood to tight spot
  • Exact 0–100% digital battery display
  • USB-C charging, IPX6 stormproof, drop-tested
Cosari Helios X10
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Built for the Moments Your Old Flashlight Let You Down

Every feature answers a complaint we heard over and over from people who'd been burned by cheap lights and overpriced ones.

Flood or Spot in One Slide

Pull the head back for a 120° wall of light across the yard. Push it forward to focus a tight beam that reaches 500 meters. Dual O-rings hold it exactly where you leave it.

Battery You Can Read

A digital display shows remaining charge from 0 to 100% in single steps. No more guessing what three blue dots mean.

Charges From Your Phone Cord

Standard USB-C input means no special magnetic cable to lose. The USB-A output can top up your phone during an outage.

Stormproof and Drop-Tested

IPX6 O-ring sealing handles pouring rain. The 6061-T6 hard-anodized aluminum body survived six 1.5-meter drops onto concrete.

How the Helios X10 Works

Slide to Focus

Slide to Focus

The telescopic head moves the thick convex lens closer to or farther from the XHP90.3 LED. Pulled back, light spreads into a 120° flood. Pushed forward, it condenses into a spotlight that carries 500 meters.

Read It, Charge It

Read It, Charge It

The display above the power button shows battery from 0 to 100%. Flip open the sealed rubber cover for the USB-C charging port and the USB-A output for emergency phone charging.

Reach the Far Tree Line

Reach the Far Tree Line

In spotlight mode, the beam cuts across open fields and down dark roads, so you can see what's out there before you walk toward it.

Cosari Helios X10 hero
Excellent4.8 (247)Trustpilot

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Cosari Helios X10

10,000-lumen aircraft-aluminum tactical flashlight with telescopic zoom, exact 0–100% digital battery readout, USB-C charging and IPX6 weather sealing.

Backed by our 30-Day Money-Back Trial & Full 2-Year Cosari Warranty.

$39.99 $79.99 Free Tracked Shipping Included

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30-Day Money-Back Guarantee plus a full 2-Year Warranty.

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Description

Description: The Cosari Helios X10 is a 10,000-lumen rechargeable tactical flashlight machined from 6061-T6 hard-anodized aircraft aluminum. A sliding telescopic head moves the beam between a 120° flood and a 500-meter spotlight. A digital display shows exact battery percentage, and it charges with standard USB-C. The pre-installed 5000mAh 26650 cell gives up to 12 hours on low and about 3.5 hours of sustained high output.

Shipping & Returns: Free tracked shipping on every order. Try it for 30 nights. Take it outside, compare it with any flashlight you own, and if it doesn't earn its place, return it within 30 days for a full refund.

Care & Battery: Charge fully before first use after removing the insulator tab. Keep the port cover closed in wet weather. For long-term storage, charge to about 50–70% and recharge every few months.

Shipping & 30-Day Returns

Free Shipping: Every order ships free with full tracking within 24 hours.

30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.

2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.

Why Choose the Cosari Helios X10?

Cosari Helios X10 Detail

Multi-Core XHP90.3 LED

A high-density emitter behind a thick convex glass lens produces a clean 6500K beam with no yellow ring or dark center.

Finned Heat Sink

CNC-milled cooling fins on the neck pull heat away from the LED. In our tests the barrel held around 48°C after 15 minutes on high.

Anti-Roll Aircraft Aluminum

A 6061-T6 hard-anodized body with diamond knurling and an anti-roll bezel. Drop-tested from 1.5 meters onto concrete.

Cosari Helios X10 vs. Ordinary Alternatives

Cosari Helios X10Standard Competitors

FeatureCosari Helios X10Standard Competitors
Beam optionsFlood and spot with telescopic zoomFixed beam on most boutique lights
Battery readoutExact 0–100% digital displayColored dots or a single status light
ChargingStandard USB-C plus USB-A power-bank outputMagnetic cables or micro-USB
Turning it offHold 2 seconds from any modeOften requires cycling through strobe and SOS
Price$39.99 (50% off today)$119–$140 for comparable build quality
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What's Included

In the Box
  • 1 × Cosari Helios X10 Tactical Flashlight (5000mAh 26650 battery pre-installed)
  • 1 × USB-A to USB-C Charging Cable
  • 1 × Braided Nylon Wrist Lanyard
  • 1 × AAA Battery Holder Adapter
Technical Specifications
  • Output: 10,000 peak lumens (XHP90.3 LED, 6500K)
  • Beam Distance: up to 500 m (1,640 ft) focused
  • Flood Angle: 120° wide-angle
  • Battery: 5000mAh 26650 Li-ion, replaceable
  • Runtime: up to 12 hrs low / ~3.5 hrs sustained high
  • Charging: USB-C input, USB-A power-bank output
  • Body: 6061-T6 hard-anodized aluminum, IPX6, 1.5 m drop-tested
  • Size & Weight: 168 × 38 mm, 310 g (10.9 oz)
Care & Safety
  • Remove the insulator tab from the tailcap and give the light a full charge before first use. The display will read 100% when it's full.
  • Keep the rubber port cover closed in rain or spray. Wipe the lens with a soft cloth, and store at 50–70% charge if you won't use it for a while.
  • Backed by our 30-Day Money-Back Guarantee & 2-Year Warranty
  • Customer Support: support@buycosari.com
In the Box Cosari Helios X10

Ready in 3 Steps

Swipe left for steps 2 and 3

  1. Charge With USB-C
    1

    Charge With USB-C

    Plug in any USB-C cable and watch the display climb to 100%.

  2. Click and Slide
    2

    Click and Slide

    Press the side switch, then slide the head forward to move from flood to spotlight.

  3. Light Up the Night
    3

    Light Up the Night

    Step outside and light up the whole yard, all the way to the trees.

Verified Customer Reviews

What 200+ Verified Buyers Say About the Cosari Helios X10

Excellent Trustpilot
4.8
Based on 247 verified reviews
5 Stars
212
4 Stars
25
3 Stars
7
2 Stars
2
1 Star
1
97% of buyers recommend the Cosari Helios X10
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✓ Verified Purchase
Greg M.2 days ago

Lit up our whole downstairs during last week's storm—then reached 350 yards out back

Transformer blew down our road during an ice storm and I used the Helios X10 for three hours straight. Bounced the wide flood beam off the ceiling in our cluttered family room and it lit up the whole downstairs better than our floor lamps, and the digital screen barely dropped from 100% to 94%. Stepped out onto the porch afterward, slid the head forward, and lit up the horses in our back pasture 350 yards away like a searchlight. My wife actually walked over to ask what was going on.

Verified Purchase · Kalispell, MT · Cosari Helios X10

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Darren K.4 days ago

Feels like machined military hardware right out of the box

Just unpacked mine at the kitchen table and the heft immediately tells you it isn't hardware-store plastic. Thick machined aluminum body, crisp knurling, and the telescopic slide zoom has buttery-smooth O-ring resistance so it won't creep forward on your belt. Plugged it straight into my existing USB-C truck cord—no hunting around for weird proprietary magnet chargers. Already went back for the 50% off deal to grab two more for my dad's pickup and my daughter's road kit.

Verified Purchase · Fort Worth, TX · Cosari Helios X10

✓ Verified Purchase
Brian S.5 days ago

FINALLY an actual 0 to 100% battery number!

I am so sick of flashlights with three blinking blue dots where you have zero clue if you have 70% left or ten minutes before you're walking in pitch dark. Having an exact 0–100% digital percentage readout right on the handle is worth the price by itself. Plus, if the light has been on for more than 5 seconds, one single click turns it straight off without forcing you to cycle through blinding strobe and SOS modes. Thank god an engineer actually used their brain.

Verified Purchase · nh — Concord, NH · Cosari Helios X10

✓ Verified Purchase
logan R.1 week ago

Pinned coyotes at 400 yards on our elk camp perimeter

Pulled this out at camp around 11 PM when we heard coyotes yipping near the edge of the timber. Slid the bezel forward into tight spotlight mode and pinned them clearly at the far end of the meadow roughly 400 yards out. There is no ugly yellow ring or dark donut hole in the middle of the beam—just a clean, sharp punch of pure white daylight.

Verified Purchase · Flagstaff, AZ · Cosari Helios X10

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Keith W.1 week ago

I own two Olights and a Fenix, and this is the one I grab every night

I've spent way too much money on boutique tactical lights over the years, and the Helios X10 is the one sitting by my back door for nightly dog walks in the pouring rain. Being able to go from a super wide path flood to a tight long-range throw in half a second beats any fixed-beam light, and I can top it off on my F-150 console USB-C cable anytime. Dropped it off my tailgate onto wet gravel twice already and barely put a mark on the anodizing.

Verified Purchase · Spokane, WA · Cosari Helios X10

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Patricia H.10 days ago

Saved my phone battery when the power went out

Bought this mainly for tornado season and backyard checks, and ended up needing the emergency power-bank feature way sooner than expected. Power stayed out for six hours on Tuesday and this flashlight topped my iPhone up from 12% to 55% while still keeping plenty of juice to light our hallway all night. Knowing the exact percentage left takes all the stress out of outages.

Verified Purchase · Tulsa, OK · Cosari Helios X10

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Mark V.2 weeks ago

Solid, heavy-duty metal—stays cool on high

Giving 4 stars only because it has real weight to it compared to a pocket penlight, so it's better suited for a jacket pocket, truck door, or belt clip than gym shorts. That said, the thick cooling fins near the head actually do their job. Even after ten minutes running on high during a late-night snowplow check, the handle stayed comfortable in my bare hand without getting hot.

Verified Purchase · Duluth, MN · Cosari Helios X10

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Trevor D.2 weeks ago

Zero dark spots—cleanest zoom beam I've ever seen

Every zoom flashlight I've bought off big-box shelves had either a loose rattling head or a weird square LED grid pattern that looked awful. The Helios X10 throws an edge-to-edge circle of clean white floodlight wide enough to illuminate both sides of a rural two-lane road, and slides smoothly into a laser-tight column when I hear something rustling down by our creek.

Verified Purchase · knoxville, TN · Cosari Helios X10

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Russell P.3 weeks ago

One-click shutoff and real battery life

My biggest pet peeve with tactical flashlights is clicking five times through strobe just to turn the thing off. With this one, once you've used a mode for a few seconds, one press shuts it right down. Battery holds its charge in a cold glovebox without parasitic drain—checked mine after two weeks of freezing nights and the display still read 98%.

Verified Purchase · Traverse City, MI · Cosari Helios X10

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Alan C.3 weeks ago

Out-throws my brother-in-law's $140 spotlight

Compared it head-to-head at the lake cabin against my brother-in-law's $140 brand-name tactical light. Mine lit up the channel buoy across the cove noticeably clearer when zoomed in, and zoomed back out it covered the entire dock while his only made a narrow tunnel. He asked me for the link before the weekend was over.

Verified Purchase · Coeur d'Alene, ID · Cosari Helios X10

Never Squint Into a Dark Yard Again

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Frequently Asked Questions

Do I have to click through strobe and SOS to turn it off?

No. Hold the power button for 2 seconds from any mode and it shuts off immediately.

Is the battery included and can I replace it?

Yes. A 5000mAh 26650 lithium-ion cell comes pre-installed. Just pull the insulator tab before first use. It's replaceable through the screw-off tailcap.

Does it charge with a normal USB-C cable?

Yes. It charges from any standard USB-C cable, and it has a USB-A output so you can top up your phone in an emergency.

Will the zoom head slide on its own while I'm walking?

No. The telescopic head rides on dual high-friction O-rings, so it moves smoothly when you push it and stays put when you don't.

Can I use it in the rain?

Yes. It's IPX6 rated against heavy rain and high-pressure spray. Close the port cover and don't submerge it.

How hot does it get on maximum?

In our 15-minute FLIR test, the barrel peaked at about 48°C (118°F). It's warm, but you can comfortably keep holding it thanks to the finned heat sink near the head.

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