Ultra-bright and lightweight: 1500 lumens for a weight of only 145 g Lighting for movement automatically adapts to ambient light Minimum burn time of 5 hours in REACTIVE LIGHTING mode (STANDARD level), built to power through long activities like trail running and ultra-running Red lighting, continuous or strobe, at the rear of the headlamp, and a separate button to quickly turn it on or off Lithium-ion 3200 mAh battery, rechargeable with a type C USB port
eBay