Main Features:New arrival bicycle taillight4 modes: High strobe， slow strobe， constant and flash in turnBuilt-in 2pcs AAA batteriesThe mount is suitable for straight tube that diameter less than or equal to 3cmAnyone who ride bike need a headlight like this to ensure safetyThe bike is not included Specification:GeneralType:Cycling Front light， Bicycle LightsMaterial:Plastic， Electronic ComponentsSuitable for :Bike， Mountain Bicycle， Road BikeSpecificationsLed Quantity:5Power Source:2 x AAA batteryDimension and Weight Product weight :0.040 kgPackage weight :0.100 kgProduct size (L x W x H) :10.8 x 4 x 2 cm / 4.3 x 1.6 x 0.8 inchesPackage size (L x W x H) :14 x 11 x 6 cmPackage ContentsPackage Contents:1 x Bicycle Light， 1 x Mount