Knog Quokka is a new model of headlamp that fits into the family of Knog silicone headlamps. It is primarily designed for running, hiking, camping and other activities and stands out for its ultra-lightness. The Quokka's body and strap are made of matte silicone that won't clog your hair. It's easy to clean and adjustable for head circumference from 300 to 660 mm. The silicone belt adjusts with a clamping buckle. You'll love the model's practicality thanks to the simple USB charging, integrated battery and one-button operation. There are 4 modes and 4 brightness settings for illumination. OPTIMALLY POSITIONED LEDSThese 3 sets of LEDs are optimally positioned for their individual purpose - a spot light cone for distance, a wide light cone for ambient light and a red light for night/low light. All this now with 150 lumens. Charge Time: 3.5 hoursLumens: 150 Battery LifeMODES MAX LUMENS / RUNTIME HRSMIN LUMENS / RUNTIME HRS COMBO 150 LM| 2 HRS 15 HRS SPOT 100 LM| 3.5 HRS 25 HRS AMBIENT / WIDE 40 LM| 6 HRS 30 HRS RED LED 3 LM| 28 HRS 100 HRS