Let the Spok 50 USB headlight lead the way. Its mission: to help you explore new paths and boldly go by bicycle. This versatile little light uses a rechargeable lithium polymer battery to deliver three safety light modes, long run times, and 270 of visibility. It easily secures to a helmet or handlebars to light your way. Stay seen! Stay safe! Features: - Weight: 25 grams - Light Modes: Steady, Courtesy(TM) and Superflash(TM) modes - Battery: USB C rechargeable lithium polymer battery for up to 14 hours of runtime - Degrees of Visibility: Side cutouts provide 270 degrees of visibility Specs: - High output surface mounted LED provides steady, Courtesy(TM), and Superflash(TM) modes - FL1 tested run time: 2.5 hrs (steady - 50 lm), 3.5 hrs (Courtesy(TM) 15-45 lm), and up to 14 hrs (Superflash(TM) - 50 lm) - Side cutouts provide 270 of visibility - Dust & water resistance rated to IP54 standard - 270 mAh lithium polymer battery charges in 2 hours with USB C cable (included) - Diminutive size and fast mounting rubber strap mounts to multiple mounting locations in seconds without tools - 25 grams