Smart Bicycle Tail Light USB Charging Warning Light LED MTB Round Rear Back Safety LanternSpecification:Light source: COB LED 15 chipsColor: Red Light、 White light !#!amp!*!amp; Blue light for order optionBeam Angle: 120 degree chip、 180 degree visibleMode: 6 modes (Standard、 High、 Overdrive、 50% flashing、 100%flashing、 Pop flash)Switch: Press button; long press to turn on or off、              short press to change among the first three modes;              double quick press to change for the next three modesBattery: Li-polyester battery embedded、 3.7V 280mAHCharging time: About 1-2 hoursBurning time: Around 2 to 14 hours、 subject to light color or mode in useCharging: USB charge (Android type port)、 5V 1A maxIndication: Red light when charging、 auto turns off when fully chargedIngress protection: Rain water proof. Do not use in waterMaterial: ABS plastic、 Aluminum alloy、 electronic devicesNet weight: About 25 gramsMount:  Fits 12-33mm tubeFeatures:LED COB tail lamp、 high intensityCompact size、 light weight、 clear Diffuser、 wide visionLi-polyester battery embedded、 USB RechargeableDetachable mount bracket、 easy to use at bike bag or backpackQuick release mount、 360 degree rotatingPackage includes:1 x light1 x USB cable