Item Package Dimensions L x W x H ?7.28 x 4.53 x 1.97 inches Package Weight ?320 Grams Brand Name ?ROCKBROS Warranty Description ?1-year Part Number ?24720007001 Included Components ?Charging cable, Mount frame Dual functionality, killing two birds with one stone: This cycling lock with tail light offers not just a bike lock but also a bike tail light, thus ensuring both riding safety and convenient locking functionality. It perfectly addresses the multiple needs of cyclists during their rides and parking. Easy installation and removal: Equipped with a saddle rail bracket and quick-release mechanism, this bike tail light combine lock can be easily installed and removed, saving cyclists valuable time and adding flexibility to their rides. Intelligent unlocking: With its intelligent unlocking feature, this bike tail light with hidden lock can be unlocked automatically when your phone approaching within 1 meter, eliminating the hassle of carrying a physical key and enhancing both convenience and security for cyclists. Long battery life and multiple lighting modes: Offering five different lighting modes, this bike tail light ensures cyclists' safety in various riding environments. And with its long-lasting 800mAh battery, it guarantees over 30 hours of use, making it an ideal cycling lock with tail light for extended rides. High-quality shell and excellent waterproof performance: Crafted with a high-quality CNC anodized shell, this bike tail light combine lock not only looks sleek but also promises durability. Boasting an IPX6 waterproof rating, it allows cyclists to ride confidently in any weather, worry-free about damage to their bike tail light with hidden lock.