1. CREE XM-L2 LED with a lifetime of up to 50000 hours; 2. Side switch on the top 8 output modes: Turbo: 980 Lumens (Automatically enter High mode after 3 mins continuous use to avoid overheat) High: 470 Lumens (3.5hrs.); Mid: 220 Lumens (10hrs.); Low: 20 Lumens (130hrs.); Fast strobe; SOS; Warning Strobe; Slow Flash; 3. Super-low Standby Current <50uA 4. Constant current circuit constant output 5. Effective range of 278 meters 6. Intensity: 19200cd 7. Uses 2 x 18650 (4 x CR123A) batteries 8. Working voltage: 2.8~8.4V 9. High quality metal reflector maintains great throw distance and spread with an ideal beam pattern 10. Aerospace-grade aluminum alloy Stainless Steel retaining ring on the top 11. Military Specification Type III- hard anodized body 12. Waterproof in accordance with IPX-8 standard 13. Ultra-clear tempered glass lens resists scratches and impacts