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...

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Cyalume

Q: 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.

Q: 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

Q: 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.

Product ID: 52061624

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💧waterproof & submersible

🔋no batteries required

🕒12-hour continuous glow

Frequently Bought Together

Cyalume Glow Sticks Military Grade Lightstick - Premium Green 6” SnapLight Emergency Chemical Light Stick with 12 Hour Duration , 10 Pack

Cyalume - 9-08002 SnapLight Red Light Sticks – 6 Inch Industrial Grade, Ultra Bright Glow Sticks with 12 Hour Duration (Pack of 10)

Cyalume White Emergency Glow Sticks - Premium 6” SnapLight Survival Glow Sticks with 8 Hour Duration for Use as Emergency Flares and Hiking Safety Gear (Bulk Pack of 10 Safety Glow Sticks)

Description

💡 Stay lit, stay safe — glow like a pro, anytime, anywhere!

SAFE TACTICAL - Non-flammable, non-toxic, and waterproof for any environment
INSTANT ACTIVATION - Just bend, snap, and shake to flood your space with vibrant green light
BULK PACK CONVENIENCE - 10-pack ensures you’re always prepared for emergencies or adventures
ALL NIGHT ILLUMINATION - Keeps you lit for a full 12 hours without fail
MILITARY GRADE RELIABILITY - Trusted by US military for elite, high-output illumination

The Cyalume Glow Sticks Military Grade Lightstick is a premium 6-inch chemical light source designed to meet rigorous military standards. This bulk pack of 10 green chem lights delivers bright, 360-degree illumination for up to 12 hours without batteries. Waterproof, non-flammable, and non-toxic, these durable glow sticks are ideal for emergency, tactical, and outdoor use, providing reliable light in any situation.

Specifications

Manufacturer	Cyalume Technologies, Inc.
Part number	9-08001
Item Weight	230 g
Product Dimensions	22.86 x 15.24 x 3.05 cm; 230 g
Item model number	9-08076
Size	10 Pack
Colour	Green
Style	Ultra Bright Light Sticks with 12 Hour Duration
Material	Plastic
Shape	Duration: 12 Hour
Item Package Quantity	1
Number of Pieces	10
Included components	…
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

What is the life shelf of the unopened Cyalume snaplight?

what color is best

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

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

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