An ideal entry-level model, the Ledlenser SEO3 comes in green and orange and has an ideal price-performance ratio. The SEO3 runs on regular AAA batteries and on the lowest setting the light can last up to 40 hours1. You focus it with a rotary switch and it is overall very easy to use. It also sits lightly and comfortably on your head. Furthermore, the headband can be removed and washed.100 Lumens40 Hours100 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 SwitchTransportation Lock - Transportation LockIPX6 - Protection against water projected in powerful jetsIP5X - Protection against dustLED Configuration - 1 x Power LEDLuminosity - MAX 100 lm - MIN 15 lmLighting Range - MAX 100 m - MIN 30 mBattery Duration - MAX 40 h - MIN 10 hBattery - 3 x Micro (AAA) 1.5VBattery Capacity - 5.63 WhWater Resistance - IPX6dust resistance - IP5XRechargeable - NoHead Diameter - 29 mmWeight - 105 g Ledlenser Warranty7 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) and 2 years on rechargeable batteries (keep your receipt for this one!)