Be seen in more ways than one with Luci. Featuring 100 lumens, a portable design, and rechargeability via solar or USB, the Luci Solar Bike Light Set is the best way to be seen into the night.a Includes headlight (built-in mount), taillight, taillight mount, 2x silicone straps, micro-USB cablea Adjustable straps to fit any size seatpost or handlebara Front light charges back when connected via magnets (or charge via USB)a Headlight: 100 lumens, lasts up to 15 hours on a single chargea Taillight: 40 lumens, lasts up to 3 hours on a single charge (see details under "tech specs" below)a Recharge via solar or quick-charge via USBPerfect for: bike trails a urban cycling a road cycling a family riding a city bike pathsHeadlight Tech SpecsGet to know the headlight a little better.Product featuresa Up to 100 lumensa 10 cool white LEDsa Built-in USB port for charging lighta Adjustable silicone strapa Micro-USB cable includeda Lightweight: 2 oz (57 g)a Water resistant: IPX4Product functionsa 4 light modes: low, medium, high, flashinga 2 second quick shut offa Battery level indicatora Operating temp: -10-50AdegC (15-122AdegF). Do not place on surfaces over 50AdegC (120AdegF)Chargea Lasts up to 15 hours on a single chargea Recharge via solar or quick-charge with USB (8 hours / 2 hours)a 750 mAh Li-ion batteryDimensionsa Depth: 1.8 in (4.5 cm)a Length: 2.9 in (7.4 cm)a Height: 0.8 in (2 cm)Taillight Tech SpecsGet to know the taillight a little better.Product featuresa Up to 40 lumensa 5 red LEDsa Adjustable silicone strapa Lightweight: 1.2 oz (34 g)a Water resistant: IPX4Product functionsa 4 light modes: low, medium, high, flashinga 2 second quick shut offa Battery level indicatora Operating temp: -10-50AdegC (15-122AdegF). Do not place on surfaces over 50AdegC (120AdegF)Chargea Lasts up to 3 hours on a single chargea Recharge via connection with front lighta 300 mAh Li-ion batteryDimensionsa Depth: 1.1 in (2.8 cm)a Length: 2.9 in (7.4 cm)a Height: 0.8 in (2 cm)