1 piece COB 10 chips high brightness red LED
25 Lumen of light outputSide visibility5 Modes: Standard/ High/ Overdrive/ 50% Flash/ 100% Flash/ StrobeRechargeable lithium polymer batteryUSB RechargeableLow battery, charging and fully charged indicatorAutomatic fully charge cut off systemUSB charging cable suppliedCharge Time: 2 hoursQuick release rubber strap seatpost mount fits 22-31.8mm postsWater resistantWeight: 20g