The bike tail light is made from 64 pieces of LED.Build-in 1200mAh battery, rechargeable and energy saving.It can be easily attached on the bike seat as safety warning light.Creative LED display pattern makes your bicycle cool and stylish.Type: Bike Tail LightMaterial: ABSLED Number: 64 LEDsLumen: 80lmPower Supply: Lithium Battery 1200mAh (Included)Features: USB Charge, LED Display, Universal, Easy Installation, Warning LampSize: 7.1cm x 5.8cm x 3cm/2.80" x 2.28" x 1.18" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Bike Tail Light1 x Charge Cable1 x Fixing Strap1 x User Manual