The Nitecore T4K's quad LEDs quadruple the power to 4000 lumen while maintaining the compact size and stylish design reminiscent of Nitecore's award winning Tup EDC flashlight. That translates to over 228 yards of throw and illumination from a thumb-sized keychain EDC flashlight. 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 instant turbo making the T4K a must have accessory for any keychain, emergency kit, or outdoor set.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.Specifications:* LED: 4x CREE XP-L2 V6* Maximum Brightness: 4000 lumen* Peak Beam Distance: 228 yards* Peak Beam Intensity: 10900 cd* IP Rating: IP54 * Impact Resistance: 1 m* Brightness & Runtimes:++++ Turbo: 4000 lumen / --++++ High: 200 lumen / 2 hr 45 min++++ Mid: 65 lumen / 7 hr++++ Low: 15 lumen / 21 hr++++ Ultralow: 1 lumen / 67 hr* Dimensions: L-3.24"xW-1.15"xH-1.15"* Weight: 2.72oz