The Redline FLEX utilizes Flex-Power Technology. The FLEX features 6x adjustable zoom, a dual-direction clip and a powerful magnetic base for convenient hands-free lighting.4 LIGHT MODES - • High (250 lumens) - 2.5 hours / 160 meters • Low (80 lumens) - 5.5 hours / 89 meters • Strobe (250 lumens) - 2 hours / 160 meters • Turbo (450 lumens) - 40 seconds / 237 meters3 LIGHT MODES - AA Battery • High (90 lumens) - 2.5 hours / 102 meters • Low (30 lumens) - 4.5 hours / 57 meters • Strobe (90 lumens) - 4 hours / 102 meters DESIGN • Convex lens • 6x adjustable zoom • Anodized aircraft-grade aluminum; water and impact-resistant • Dual-direction steel clip • Flex-Power™ Technology • Battery charging indicator • Powerful magnetic base OPERATION • Side-positioned, ON/OFF button with battery indicator ACCESSORIES • Micro USB to USB charging cable included BATTERIES • Powered by either 1 AA battery or 1 Lithium-ion 14500 rechargeable battery (14500 included)SPECS • 0.2 lbs. • Length: Compacted: 4.23” / Extended: 4.7” • Diameter: (Head) 1.14” / (Barrel) 0.78”