Zebralight H31b Blue LED CR123 Headlamp

LED: Cree XP-E Blue (Dominant Wavelength 465-485nm) User Selectable Modes: 3 (High, Medium and Low). Each mode can be configured to one of the two sub-levels. Light Output - High: H1 70 Lm (0.9 hrs) or H2 38 Lm (2 hrs) / 4Hz Strobe, Medium: M1 14 Lm (12 hrs) or M2 8 Lm (23 hrs), Low: L1 1.6 Lm (3.7 days) or L2 0.15 Lm (21 days). Light output are out the front (OTF) values. Runtime tests are done using Panasonic CR123A lithium batteries. Runtimes are usually much shorter with rechargeable RCR123 (16340) batteries, especially with protected 16340s that have higher discharge cut off voltage. Battery: One CR123A lithium primary or RCR123 Li-ion rechargeable. Batteries are not included in the package. Battery Shelf Life: Over 3 years under parasitic drain. Beam Type: 80 degree spill beam spread, 9 degree hot spot. Dimensions - Diameter: 0.90 inch (23 mm), Length: 2.57 inch (65 mm) Weight: 0.97 oz (27.6 gram) without battery or headband. Features: Electronic soft-touch switch, with a 200,000 cycle operating life, Smart user interface provides fast and easy access to all brightness levels, Precision machined casing from premium grade Alcoa aluminum bar stock, Durable natural hard anodized finish (Type III Class I), SCHOTT ultra clear lens with anti-reflection coatings on both sides, Orange peel textured reflector, Battery power can be locked out by slightly unscrewing the tailcap to prevent unwanted activations or parasitic drain, Waterproof to IPX8. This light has 3 main levels (High, Medium, and Low). Each main level can be configured to one of its two sub-levels. The second sub-level of the High can be further configured to different brightness levels or strobes. Accessories in the package: Removable pocket clip, One black silicone holder with headband, Two o-rings.