Is the light bulb interchangeable? If so, is it possible to buy a different color of bulb?

The LED installed in NightStar is not interchangeable. The light is permanently sealed. NightStar is available with a green LED as a color option.

How big is the battery inside?

It’s not really a battery it’s a capacitor it’s more reliable but not as powerful. Once fully charged it will provide life for about 15 minutes. This lite is not very bright but in an emergency it’s better than nothing. Worth every penny.

How bright is it, in lumens if anyone knows?

According to the manufacturer it is 15 lumens. Thanks for asking

how do you recharge it this flashlight?

shake it right to left, not to hard

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Description

⚡ Shake. Shine. Survive. The flashlight that never quits.

DIVE READY DURABILITY - Waterproof up to 200 feet and buoyant—perfect for boating and extreme weather.
MORE THAN A FLASHLIGHT - Includes magnetic compass and signaling light—your ultimate survival companion.
INSTANT POWER ON DEMAND - Recharge in just 30 seconds with a shake, delivering 10 minutes of bright light—no batteries needed.
UNSTOPPABLE ILLUMINATION - Pierce darkness with a powerful 150-lumen LED beam reaching 30 feet.
BUILT TO LAST WORRY FREE - 1.5 farad gold film capacitor ensures years of zero-maintenance operation backed by a 5-year warranty.

The NightStar Shake Flashlight features a 150-lumen LED with a 30-foot range and 12-foot beam diameter. Powered by a 1.5 farad gold film capacitor, it recharges in 30 seconds via shaking and provides 10 minutes of light without batteries. Waterproof up to 200 feet and floats, it’s designed for emergencies, camping, and boating. Built for durability with zero maintenance and backed by a 5-year warranty, it also includes a magnetic compass and signaling light for comprehensive survival readiness.

Specifications

Special Feature	Waterproof
Color	Clear
Power Source	Manual
Light Source Type	LED
White Brightness	150 Lumens
Included Components	Cable
Product Dimensions	10"D x 1.5"W x 1.5"H
Voltage	3.7 Volts
Battery Cell Composition	Other Than Listed
Item Weight	10.08 ounces
Number of Batteries	1 Product Specific batteries required. (included)
Water Resistance Level	Waterproof
Warranty Type	Full Warranty
Brand	HaveLight
Brightness	150 lumens
Battery Description	Lithium-Ion
Finish Type	Gold
Mounting Type	Handheld
Recommended Uses For Product	emergencies, camping, boating, severe weather preparedness
Manufacturer	EcoCentricNow LLC
UPC	810346000769
Item Dimensions LxWxH	10 x 1.5 x 1.5 inches
Brand Name	HaveLight
Country of Origin	Japan
Warranty Description	5 year.
Model Name	NightStar Shake Flashlight
Part Number	810346000769
Outer Material	Polycarbonate

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