NiteRider Adventure 320 Headlamp (Headstrap). A super-bright headlamp with up to 320 lumens of light output that’s USB rechargeable with 9 different light modes Light Modes. Easily toggle between the headlamp’s nine different light modes by using the top power button. The light comes with a large variety of different light modes including night vision, flashing, constant, diffused, etc Mode One (Night Vision): 9.30 hoursMode Two (Night Vision Flashing): 50 hoursMode Three (Diffused): 17 30 hoursMode Four: 12 lumens – 32 hoursMode Five: 54 lumens – 9 hoursMode Six: 320 lumens – 1.30 hoursMode Seven (Rapid Flashing): 23 hoursMode Eight (Beacon Flashing): 77 30 hoursMode Nine (SOS Flashing): 47 hoursUSB Rechargeable. The internal lithium-ion battery can be recharged via any standard USB port for quick and easy recharging on the go. The battery light indicator lets you know when it’s time to charge and the light comes with up to 77 30 hours of battery power and fully recharges in just 2.30 hours Features. 320 lumens maximum light outputUSB rechargeable lithium-polymer battery2 30 hours full recharge timeUp to 77 30 hours battery lifeLow battery light indicator9 light modesRear tail light clipAdjustable headbandFL1 Standard IP67 water and dust resistanceAdjustable light angleWeighs 87gDOESN’T INCLUDE HEADSTRAPBuy NiteRider Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.