Would I be able to go free diving with this in a state park spring?

Great day Zachary, Great question,Yes you can, Factory short description;Cyalume's industrial grade 6 in. SnapLights provide 360 of illumination. They are foil wrapped for light/moisture protection, maintenance free, non-toxic, non-flammable, and waterproof.A customer in San Diego, CA stated; A must have to keep around for emergencies, also good for the kids at parties, in campers, on boats,etc.We zip tie them to our scuba dive gear when we do night dives a great safety light!Thanks for asking, RiccaPlanet

I saw a military grade version that only last for 30min. How come these lasts for hours?

There are different grades of light sticks for different uses. The 30 min you saw where rated as High Intensity, those last for approximately 30-45 minutes at the maximum output. There is also an Ultra-High Intensity version which lasts for only a few minutes. Those are rated for 5 minutes of maximum output. They either put in a catalyst to speed up the reaction in the high intensity sticks or an inhibitor in the longer time sticks. The longer the time on the stick, the less light output. I hope that helps.

I understand the use for all the colors but blue. What are these for?

Blood shows up under blue light better.

Do these have an expiration date? I'm thinking of putting them in my disaster kit.

Yes they do. The packs I bought early 2015 have the expiration date of 11/19 so they last over four years at least. They work great. Hope this helps.

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Blue Military Grade Light

Product ID: 2324165

Details

Brand
Cyalume
Included Components
Lightstick
Item dimensions L x W x H
8.75 x 3.25 x
Manufacturer
Cyalume Inc.
Number of Items
10
Number of Pieces
10

⏳8-hour long-lasting glow

💧Waterproof & non-flammable safety

🔵Premium bright blue illumination

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Details

Brand
Cyalume
Included Components
Lightstick
Item dimensions L x W x H
8.75 x 3.25 x

Description

🔦 Light up your survival game with military-grade brilliance!

SAFE WATERPROOF - Non-toxic, non-flammable chem lights that work underwater and in confined spaces
INSTANT ACTIVATION - Snap, shake, and glow—ready in seconds for any urgent situation
EXTENDED 8 HOUR GLOW - Keeps you lit through the longest emergencies and adventures
BULK PACK CONVENIENCE - 10-pack ensures you’re always prepared, no compromises
MILITARY GRADE RELIABILITY - Trusted by US military for tactical 360° illumination

Cyalume’s 6-inch Premium Blue SnapLight Glow Sticks deliver ultra-bright, military-grade illumination that lasts up to 8 hours. Waterproof, non-flammable, and trusted by US armed forces, this bulk pack of 10 chem lights is engineered for emergency readiness, tactical use, and outdoor adventures—ensuring you never get left in the dark.

Specifications

ASIN	B004NBZLJC
Best Sellers Rank	#47,987 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #26 in Emergency Glow Sticks
Brand	Cyalume
Brand Name	Cyalume
Customer Reviews	4.5 out of 5 stars 1,314 Reviews
Included Components	Lightstick
Item Dimensions	8.75 x 3.25 x 3 inches
Item dimensions L x W x H	8.75 x 3.25 x 3 inches
Manufacturer	Cyalume Technologies, Inc.
Manufacturer Part Number	9-08003
Model Number	9-08003
Number of Pieces	10
Set Name	Bulk Pack of 10
UPC	852845001113
Unit Count	10 Count
Warranty Description	Na.

Reviews

A**R

9.02.2013

P**J

26.12.2025

S**N

8.01.2025

W**3

17.11.2025

P**K

30.05.2013

J**2

19.12.2013

J**N

6.01.2012

F**1

27.06.2014

M**Z

14.07.2018

M**B

16.04.2020

C**2

2.10.2024

I**O

21.05.2025

J**Z

12.07.2019

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SAR 134

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In stock

Sold byAmazon KSADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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