3-in-1 Multifunctional DesignCombines GPS cycling computer, powerful bike light, and horn in one compact device, offering a comprehensive solution for cyclists. High-Capacity BatteryEquipped with a 4000mAh battery, ensuring long-lasting performance for extended rides without frequent recharging. Powerful IlluminationBoasts an impressive 800LM brightness, providing excellent visibility for night rides and low-light conditions. Versatile Lighting ModesFeatures single light, dual strong light, dual weak light, and flashing modes to adapt to various riding environments and preferences. Loud Horn with Multiple Tones120dB horn with 3 switchable sounds allows for effective signaling in different scenarios, enhancing rider safety. Precise GPS TrackingUtilizes GPS/wireless technology for accurate speed and distance tracking, providing essential ride data for cyclists. User-Friendly ControlsDual-line control plus button operation ensures easy and flexible management of all functions while riding. Specifications: Battery capacity: 4000mAh Light weight: about 168g Lumen: about 800LM Size: 108*52*30mm Horn: 120db (3 sounds can be switched) Control: dual-line control + button Lighting mode: single light/dual light strong light/dual light weak light/flash Package included: 1 x Bike Computer 1 x Front Floating Bracket 1 x Installation Screw 1 x Wrench 1 x Charging Cable 1 x Light & Horn Control Cable 1 x Cable Fixing Rubber Ring 1 x English User Manual