Keep the trails lit and your hands free. Whether you’re braving backcountry trails or setting up camp after sunset, a typical flashlight can get in the way and slow you down. Have the hands-free light you need to stay active after dark with the Rechargeable Sensor Headlamp. NO BATTERIES NEEDED – This headlamp is fully rechargeable! Just use the included charging cord to connect the headlamp to a power source. No need to waste space by carrying around replacement batteries. RUNS FOR 20 HOURS – When fully charged, this headlamp provides up to 20 hours of continuous light with 150 lumens. MULTIPLE LIGHT MODES – Switch between red and white light sequences with the touch of a button. Choose maximum, dim, or strobe light modes depending on your needs. HANDS-FREE ACTIVATION – Simply wave your hand in front of the headlamp’s motion sensor to turn it on or off! COMPACT AND PORTABLE – Measuring less than three inches at its widest point, this headlamp is small, lightweight, and easy to pack. Additional details: Working time: 4 to 20 hours Charging time: 2.5 hours Battery: built-in lithium-polymer battery (3.7V/1200 mAh) Dimensions: 2.4" x 1.6" x 1.4" (60 mm x 40 mm x 35 mm) Weight: 2.6 oz. (74 g) Not suitable for use in extreme temperatures.