Nighttime commutes are often times full of adventure, with nocturnal animal sightings and the feeling of flying down deserted lanes. Fun, that is, unless your light's batteries burn out along the way. The NiteRider Lumina 800 OLED Headlight prevents this downer of a dilemma with a multifunctional digital display that lets you know exactly how much battery time is left across the various lighting level options. The NiteRider Lumina 800 OLED Headlight is powered by a rechargeable Li Ion battery with run times ranging from 1. 5 hours on the high, 800 lumen setting all the way up to at least 5. 5 hours on the low, 200 lumen setting. With a total of three steady beam options and four flashing options between those two bookends, you can customize the brightness to meet your riding needs on the fly. At a claimed weight of only 172 grams, the Lumina 800 is right at home on your helmet or handlebars and won't weight things down or distract you along the way. It comes complete with a handlebar mount, an internal Li Ion battery, and USB charging cable.