The TRANSCEND 1500 is a powerful, USB-C rechargeable headlamp that features a 1,500 lumen Turbo Mode. The Mode Selector Dial and Smart Power Control enable the TRANSCEND to seamlessly transition through the different light modes. LIGHT MODES Turbo (1,500 lumens) - 30 second intervals* / 129 meters High (750 lumens) - 4 hours / 91 meters Medium (300 lumens) - 5.5 hours / 58 meters Low (30 lumens) - 28 hours / 18 meters Strobe (750 lumens) - 4 hours / 91 meters *Turbo mode is designed to give you short bursts of power when you need it most. After 30 seconds, the light will return to the previously used mode to prevent the light from overheating and protect the battery. Turbo mode can be reactivated at any time. DESIGN USB-C Rechargeable Smart Power Control Detachable head strap mount with adjustable tilt Powerful magnetic base Direct-to-Low feature Battery charging indicator Anodized aircraft-grade aluminum Waterproof (IPX7) and impact-resistant OPERATION Side-positioned ON/OFF button with charging indicator Mode Selector Dial ACCESSORIES Adjustable, reflective head strap USB-C to USB charging cable BATTERIES Powered by included lithium ion rechargeable battery (18650, 3.7V, 3200 mAh) DIMENSIONS Weight: 145g (H) 4.22 cm x (W) 9.47 cm x (D) 3.40 cm (light only) IN THE PACKAGE 1 x TRANSCEND 1500 Headlamp 1 x Li-ion 18650 rechargeable battery 1 x Adjustable, reflective head strap 1 x USB-C to USB charging cable 1 x Product manual FAQS Can I use 2 x CR123A batteries instead of the included 18650 rechargeable battery?No, you should only use a compatible 18650 battery with the TRANSCEND 1500. By using 2 x CR123A batteries, the light may burn out.