I am only going to use this in strobe blinking for self-defense, Would this work and be effective during day and night?

Yes. The strobe is very strong.

Location of serial number, for my records, please?

The location of the serial number is located near the head of the flashlight.

Is it waterproof or water resistant?

The TM20K has an IP Rating of IP68.

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Description

🚀 Light Up Your World Like a Pro

COMPACT YET RUGGED DESIGN - Under 6 inches with an ergonomic flat grip and HA III hard anodized aluminum body—lightweight durability that fits your hand and lifestyle.
RAPID USB C QUICK RECHARGE - Get back to full power in just 4.5 hours with high-capacity 9600mAh battery and QC support—stay ready for anything.
ALL INCLUSIVE ADVENTURE KIT - Comes with holster, lanyard, USB-C cable, and exclusive NitecoreSticker—gear up and stand out in your crew.
INTUITIVE ONE TOUCH CONTROL - Instant access to turbo, strobe, spotlight, floodlight, and lock modes—effortless operation for every scenario.
UNMATCHED BRIGHTNESS POWERHOUSE - Illuminate up to 317 yards with a blazing 20,000 lumen beam—never be left in the dark again.

The Nitecore TM20K is a compact, rechargeable LED flashlight delivering an extraordinary 20,000 lumens with a beam distance of 317 yards. Powered by a robust 9600mAh lithium-ion battery with USB-C Quick Charge, it offers rapid recharge in 4.5 hours. Designed for professionals and outdoor enthusiasts, it features multiple lighting modes accessible via one-touch control, a durable HA III hard anodized aluminum body, and a lightweight ergonomic design under 6 inches. Waterproof and ready for any challenge, it includes a holster, lanyard, charging cable, and a stylish NitecoreSticker.

Specifications

Special Feature	Lightweight
Colour	Black
Power Source	Battery Powered
Light Source Type	LED
Material	Aluminium
White Brightness	20000 Lumens
Included Components	Battery, Flashlight, Holster, USB-C Charging Cable
Product Dimensions	14.6D x 5W x 5H Centimeters
Voltage	3.7 Volts
Battery Cell Composition	Lithium Ion
Item Weight	14.89 Ounces
Number of Batteries	1 Lithium Ion batteries required. (included)
Water Resistance Level	Waterproof
Brand	Nitecore
Brightness	20000 Lumen
Battery Description	Lithium-Ion
Style	Compact
Bulb Base	Wedge
Finish Type	HA III Hard Anodized
Mounting Type	Handheld
Recommended Uses For Product	outdoor activities, industrial uses, personal safety, search and rescue
Manufacturer	Sysmax
Part Number	TM20K+KEY
Number of Items	1
Shape	Cylindrical with flat side
Finish types	HA III Hard Anodized
Number of Lights	19
Special Features	Lightweight
Batteries Included	Yes
Batteries Required	Yes
Bulb Features	Turbo Mode, Strobe Mode, Spotlight, Floodlight, Lock Mode
Country of Origin	USA

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.