ADT "Ammo 100" Light [LED/Front/Black] An essential item for nighttime riding. This light can be charged via USB. Includes various mounts for different installations. The total weight is approximately 25g when using the mount that secures with a rubber band to a common BMX handlebar, making it lightweight. Luminous flux: 100 Lumens 3W white LED x 1 Built-in lithium-ion polymer rechargeable battery (DC5V/500mA) Battery capacity indicator Low battery indicator Constant light → 4 hours / High brightness → 1 hour, Pulse light → 20 hours / Day flash → 8 hours Waterproof performance: IPX4 Mountable diameter: Ø19〜32mm L50 x W28 x H21.6mm 19g