What is the life shelf of the unopened Cyalume snaplight?

You all are going to think I'm making up stories, but I found a group of the Cyalume SnapLight sticks that was with some dry first aid materials that goes back to before Y2K. Perfect experiment, I thought. The green ones still glowed very brightly and although not bright were still visible 12 hours later. These things are really amazing.

Depends on your use... for brightness, without a doubt green. 2 reasons to get technical, first the chemical make up allows that color to glow brightest, and second is that the human eye sees this color better than any other light wavelength. If you're looking for "flares" though and need red, your best bet would be a strobe light. The red snap lights are good for low-light needs (hence using red lens flashlights in the military to read maps as the human eye doesn't pick this light up at low levels), but nowhere near what you would need for safety. Blues and whites are in the middle but don't nearly as long -better off with a LED flashlight. Go green...

Can they be stored in freezing temps in a car? Gets Brutal in NY in the winter

they can be stored in the car and they will not freeze

Will these give enough light to read if you need to find emergency phone numbers in phone book?

I was in a pitch black room door closed and no windows when I tried it out and I was able to find my locker and see the combination numbers on my lock. I thought it was pretty good. I'm sure you'd be able to see some emergency numbers in your phone book with this product. Hope this helped.

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Cyalume Glow Sticks Military Grade Lightstick - Premium Green 6” SnapLight Emergency Chemical Light Stick with 12 Hour Duration (Bulk Pack of 10 Chem Lights)

Product ID: 253695292

💧Waterproof & safe underwater

🔋Military-grade high light output

🕒12-hour long-lasting glow

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Description

💡 Light up your safety game—because when it’s dark, only the best glow sticks count!

UNMATCHED 12 HOUR ILLUMINATION - Stay visible and safe through the longest emergencies with a full half-day of bright green light.
SAFER ALTERNATIVE TO ROAD FLARES - Non-toxic and durable, these chem lights provide reliable signaling without the risks of traditional flares.
WATERPROOF NON FLAMMABLE SAFETY - Use confidently in any environment—even underwater or confined spaces—without fire hazards.
BULK PACK FOR ULTIMATE PREPAREDNESS - Get 10 premium glow sticks in one pack, perfect for emergency kits, outdoor adventures, or professional use.
CERTIFIED MILITARY GRADE RELIABILITY - Trusted by US military personnel, these glow sticks meet rigorous DLA and NAMSA standards for elite performance.

The Cyalume Glow Sticks Military Grade 6” SnapLight offers a premium green chemical light that delivers up to 12 hours of bright, waterproof, and non-flammable illumination. Certified to meet military specifications, this bulk pack of 10 glow sticks is trusted by US armed forces for reliable, safe, and convenient 360-degree emergency lighting—ideal for professionals and outdoor enthusiasts who demand top-tier performance and safety.

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157.96 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B004NBZLJ2
Best Sellers Rank	#16,861 in Sporting Goods ( See Top 100 in Sporting Goods ) #8 in Emergency Glow Sticks
Item model number	9-08076
Manufacturer	Cyalume Technologies, Inc.
Product Dimensions	22.86 x 15.24 x 3.05 cm; 230 g

Cyalume Glow Sticks Military Grade Lightstick - Premium Green 6” SnapLight Emergency Chemical Light Stick with 12 Hour Duration (Bulk Pack of 10 Chem Lights)

Description

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Common Questions