These lights attach to a seatpost, helmet or bag with a heavy-duty rubber band. Matching the stamina you need to compete in that sportive race, the bike lights can run for an impressive 50 hours on Constant Mode and a staggering 100 hours on both Rapid and Slow Flash. With their lenses acting as both power and mode buttons, both lights in the ORB Light Set are constructed from durable aluminium with an anodised finish.Also featuring strong sideways visibility, both lights in the light set are low profile and weigh in at only 50g combined, ensuring you get the visibility without the weight of some bulkier lights currently on the market. FRONT: 10 LumenConstant: 50 hrsFast Flashing: 100 hrsSlow Flashing: 100 hrsREAR: 5 LumenConstant: 50 hrsFast Flashing: 100 hrsSlow Flashing: 100 hrsOther featuresEasy switch operationSide visibilityAttaches to seatpost, helmet or bag with heavy-duty rubber bandLong runtimeDimensions: 26 x 26 x 31mm (Each)Weight: 26g (Individual Light Unit & Battery)Light Source: Red LED x1 | White LED x1Battery: CR2032 x 2 (Each)Mount Size: 22.0-32.0mm