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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SnapLight Industrial Grade Chemical Light Sticks, Red, 6 Long, 12 Hour Duration (Pack of 10)"

Product ID: 294750182

Details

Are Batteries Included
No
Brand
Cyalume
Colour
Red
Container Material
Plastic
Indoor/Outdoor Usage
Outdoor
Item Weight
0.23 Kilograms

⏳12-hour long-lasting glow

🔥Flameless, safe illumination

🔴Vibrant red visibility

¥13976

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Description

🔴 Light up your safety game—no batteries, no worries!

FLAMELESS SAFE - No sparks, no heat—perfect for any environment, indoors or out.
EYE CATCHING RED GLOW - Command attention and enhance safety with vivid, high-visibility color.
COMPACT READY TO USE - Snap, shake, and shine—instant light in a sleek, portable tube.
INDUSTRIAL GRADE DURABILITY - Built tough in the USA to withstand demanding conditions and keep you prepared.
UNINTERRUPTED 12 HOUR RADIANCE - Stay illuminated through every challenge with a full half-day of reliable light.

Cyalume SnapLight Industrial Grade Chemical Light Sticks deliver a powerful, flameless red glow lasting 12 hours. Designed for industrial and outdoor use, these durable, battery-free sticks provide instant, safe illumination in a compact, easy-to-activate form factor. Trusted by professionals and rated 4.6 stars, this pack of 10 ensures you’re always prepared with reliable emergency lighting.

Specifications

ASIN	B004NBZLJM
Are Batteries Included	No
Best Sellers Rank	#153,405 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,440 in Lab Supplies
Brand	Cyalume
Candle Type	Taper Candle
Colour	Red
Container Material	Plastic
Container Type	Tube
Country of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (911)
Global Trade Identification Number	00852845001120
Has Crackle Wick	No
Importer Contact Information	ATM RETAIL 1st Floor Beside P and T Building Lakdi Ka Pul Hyderabad Telangana 500004
Indoor Outdoor Usage	Outdoor
Item Type Name	candle
Item Weight	0.23 Kilograms
Manufacturer	Cyalume
Manufacturer Part Number	9-08002
Material Type Free	Lead Free
Model number	9-08002
Number of Items	10
Numeric Theme	Number 6
Occasion	general home decor
Packaging Type	Stick
Pattern	Solid
Product Features	Flameless
Product Style	Modern
Seasons	All Season
Shape	Round
Target Audience	All Ages, All Occupations
UPC	852845001120
Unit Count	10.0 Count
Wick Quantity	1

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¥13976

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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