Lezyne led femto usb drive bike light seta tough and reliable pair of bike lights for your daily commuting, lezynes compact and highly visible femto usb drive set ensures youll stand out to motorists and other cycle path users. Both units come with an optic lens with a wide angled beam thats visible from a 180 degree range, making you more visible from all angles. The 22 hour battery life up front and 15 hour life at the rear will help you to get home safely on long rides.bright and safe bike light set worthy of its ipx7 water rating thanks to the co moulded construction, this pack is ideal for all weather use. Each light features five separate modes to suit your journey and conditions, which you can switch between by pushing the power button. Easy to mount thanks to the universal handlebar straps and rechargeable through the included micro usb cable, these superb lights give you safety and peace of mind when riding in low light situations. Features material co moulded construction light type led maximum output front 15 lumens rear 5 lumens with five light modes on each lens wide angle optics battery life front up to 22 hours rear up to 15 hours battery rechargeable yes battery replaceable no mounting attachments included yes, universal strap mounts that suit all handlebar seatpost sizes waterproof yes, ipx7 waterproof rating charging micro usb charger cable included recharge time 2.5 hours visibility 180 degrees includes versatile mounting straps weight front 22g rear 23g run timesfront light flash one 15 lumens 60 hours flash two 15 lumens 60 hours flash three 15 lumens 60 hours pulse 15 lumens 60 hours solid 15 lumens 60 hoursrear light flash one 5 lumens 15 hours flash two 5 lumens 15 hours flash three 5 lumens 15 hours pulse 5 lumens 9 hours solid 5 lumens 4.5 hoursmanufacturer's part numbersblue l 1 led 31p v110red l 1 led 31p v111black l 1 led 31p v104white l 1 led 31p v107buy lezyne accessories from chain reaction cycles, the world's largest online bike store.