KNOG Blinder Arc 1.7 USB Rechargeable Front Light 170 lumens of light gives cyclists total visibility all from a super-light, USB Rechargeable, 100% waterproof, integrated silicone package. Incorporating a beam of 16 degree vertical and 24 horizontal makes the light visible to motorists at over1000m Allows riders to personalize their favorite light setting 1 x CREE XP-D LED with an elliptical beam of 16Degreex24Degree (H x W) that pumps out 170 lumens Lithium polymer battery with an integrated USB charger all wrapped up in a waterproof aluminum and polycarbonate body and weighs 100g The replaceable silicone strap fits bars 22-35mm, uses a stainless steel clamp, and features a swivel feature to better aim your light Run time: high (steady) = 1.3hr, medium (steady) = 2.3hr, low (steady) = 5hr 4, flashing = 9hr, Charge time: 5-6hr, 100g Features low battery LED indicator and a 5-6hr charge time