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The Serfas Thunderbolt Rear Bike Light comes with 35 lumens of firepower and a long-lasting rechargeable battery. Easily remove and attach to any size handlebars. Be known to cars and bikes and stay safe with Serfas.
LED Strip Creates a Non-Directional Flood Of Light
Battery – 500 mAh Lithium Polymer
Solid Modes – High (35 Lumens): 1.5 hrs, Low (10 Lumens): 4 hrs
Flash Modes – High Flash (35 Lumens): 2.5 hrs, Low Flash (10 Lumens): 8.5 hrs
Removable Straps Allow Endless Mounting Options
USB Rechargeable
Charge Indicator Light