Magicshine Seemee 30 TL V2.0 Taillight. Features: Features a built-in light sensor automatically changes the lighting modes according to the environment Mounts via an included silicone strap that will fit numerous bar shapes and diameters 320mAh battery lasts up to 87 hours on a single charge lPX6 waterproof rating guarantees continuous operation in the harshest conditions USB-C rechargeable Specs: Model:Seemee 30 TL Lumens:30 Modes:5 Rechargeable:Yes Color:Black Weight:22g