Running at night or in the dark requires effort. Ledlenser's NEO4 gives you everything you need to get out and do it. The unbeatable bang for the buck, the light weight and a first-class design make a very good argument to put on your running shoes and finally get going. Discover the virtually non-glare optics and the swivel-mounted headlamp, which light the way perfectly. And don't forget the Constant Current Mode, which provides constant illumination all the way to the end of your run.240 Lumens40 Hours30 MetersPower - high light output for every situationLow Power - economical light for long battery life, glare-free reading and workingBlink - automatic emission of light impulses at regular intervalsFront Switch - Front SwitchEnergy Saving Mode - energy saver mode for extended battery lifeConstant Current Mode - consistent energy consumption right to the endRear Light - Rear Light Transportation Lock - Transportation LockIPX7 - Protection against temporary submersionIP5X - Protection against dustLED Configuration - 1 x Power LEDLuminosity1 - MAX 240 lm - MIN 20 lmLighting Range1 - MAX 30 m - MIN 10 mBattery Duration - MAX 40 h - MIN 6 h Battery - 3 x Micro (AAA) 1.5VBattery Capacity - WhWater Resistance - IPX7dust resistance - IP5XRechargeable - No Head Diameter - 70 mmWeight - 100 g Ledlenser Warranty 7 years warranty on Ledlenser lamps when registered online (click here to register). The 7 year warranty is from date of purchase if registered - otherwise, warranty is 5 years on the Ledlenser lamp (from date of manufacturing). Warranty is 2 years on rechargeable batteries as long as you have your proof of purchase.