Nitecore T4K 4000 Lumen Super Bright EDC Flashlight

Categories: , , , SKU: T4K-39



  • Max output of 4000 lumen
  • 5 brightness levels
  • OLED display to show brightness, battery level, etc.
  • Dual switch for easy single-handed operation
  • Built-in 1000mAh USB-C rechargeable battery

Included in the Box

  • T4K Keychain Light
  • USB-C charging cable
  • key clasp

WORLDS Brightest Keychain EDC Flashlight

This is your chance to own a superlative and carry it around every day. The Nitecore T4K is the world’s most compact 4000-lumen (10-second burst) keychain light. That translates to over 228 yards of throw and illumination from a thumb-sized keychain light. The keyring has a built-in mechanical quick-release design for fast deployment and usage. Additionally, with the included adjustable pocket clip, you have an ideal EDC companion. Here to stay is the intuitive dual-button design with the instant turbo making the T4K a must-have accessory for any keychain, emergency kit, or outdoor set.

Familiar, Intuitive Operation

Here to stay is the simple dual-button design with a power button for on and off, and a mode button to cycle through brightness settings. The mode button also doubles as a turbo switch. Whether the light is off or on, holding the mode button gets you an instant turbo. With five brightness settings to cover all of your needs the T4K is a must-have accessory for any keychain, emergency kit, or outdoor set.

USB-C Fast Charging

The Nitecore T4K’s built-in USB-C fast charging fully juices the T4K in under 1.5 hours and provides over 67 hours of effective runtime per charge. The OLED display gives real-time information on battery level and charging status. If that’s not enough, the two lockout functions further improve battery life and performance. With multiple built-in charging safeguards, IP54 weather-resistant rating, and a 66-pound rated keyring the T4K is the definition of rugged.


Maximum Brightness 4000 lumen
Peak Beam Distance 228 yards
Peak Beam Intensity 10900 cd
IP Rating IP54
Impact Resistance 1 m
Dimensions L-3.24″xW-1.15″xH-1.15″
Weight 2.72oz


Turbo 4000 lumen 10 Second Burst
High 200 lumen 2 hr 45 min
Mid 65 lumen 7 hr
Low 15 lumen 21 hr
Ultralow 1 lumen 67 hr

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