I need something that can get wet on a regular basis, including fully submerged from time to time. Will this light be able to handle that?

No. It is water-resistant but not submergeable for prolonged times.

The turbo button stopped working, what do i do for a replacement?

Please go to your Amazon account, locate the order, and choose "contact seller'. We will take care of the replacement.

What is the color temperature or tint of the light like?

Lower levels are a little yellowish. Turbo is bright white. Great little light.

Watts each mode uses=? recharge speed=? cycles battery will last=? temperature range=? what happens if it gets too hot?

It will display lumens and hours available for each lumen setting. 1 lumen, 15 lumens, 65 lumens, then finally 200 lumens. These are consistent dedicated settings. You press and hold a button and you get turbo which is 10,000 lumens and the unit will count down in seconds and only run at that lumen setting for a certain amount of time and then it shuts off. Then you can press the button again run 10,000 lumens at the dedicated time. This unit will not overheat because it does not allow itself to. Turbo 10,000 lumens is at a specific time then it shuts off so it's safe. It is a great keychain light it's all my keychain and it gets beat up daily and takes all the abuse a very good light I would definitely recommend it and buy it again..

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Description

🔦 Light up your life, don’t get left in the dark!

SMART OLED DISPLAY - Stay informed at a glance with a multifunctional OLED screen showing brightness levels and battery status.
BLINDING 4000 LUMENS TURBO - Illuminate your world instantly with a jaw-dropping 4000 lumen burst that outshines the competition.
RUGGED READY FOR ANYTHING - Crafted from HA III hard anodized aluminum with IP54 water resistance—your ultimate EDC companion for every scenario.
ALL DAY POWER ZERO DOWNTIME - USB-C fast charging delivers up to 67 hours of runtime—because your adventures don’t wait.
SEAMLESS QUICK RELEASE KEYCHAIN - Deploy your light in a flash with the built-in mechanical quick release—always ready, always reliable.

The Nitecore T4K is a compact, ultra-bright 4000 lumen keychain flashlight featuring a quick-release keyring, USB-C fast charging with up to 67 hours runtime, and a smart OLED display. Built with durable anodized aluminum and IP54 water resistance, it’s designed for everyday carry, emergency use, and outdoor adventures.

Specifications

Special Feature	Adjustable
Colour	White
Power Source	Battery Powered
Light Source Type	LED
Material	Aluminum
White Brightness	4000 Lumens
Included Components	Battery, Cable
Product Dimensions	82D x 29W x 29H Millimeters
Voltage	3.96 Volts
Battery Cell Composition	Lithium Ion
Item Weight	2.72 Ounces
Number of Batteries	1 Lithium Ion batteries required. (included)
Water Resistance Level	Water Resistant
Brand	Nitecore
Brightness	4000.00
Battery Description	Lithium-Ion
Style	Compact
Finish Type	HA III Hard Anodized
Specification Met	IP54
Mounting Type	Clip-on Mount
Recommended Uses For Product	Everyday carry (EDC), keychain, emergency kits, outdoor use
Manufacturer	Nitecore
Part Number	T4K+ORG
Shape	Cylindrical
Finish types	HA III Hard Anodized
Number of Lights	4
Special Features	Adjustable
Batteries Included	Yes
Batteries Required	No
Bulb Features	Super Bright, Rechargeable, OLED Display, Impact Resistant
Country of Origin	USA

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