【3-in-1 Multifunctional Design】Combines GPS cycling computer, front light, and horn in one compact device, perfect for mountain biking and outdoor cycling adventures. 【Powerful Illumination】Dual lights offer up to 900LM brightness, ensuring excellent visibility for night rides and outdoor explorations. 【Long-lasting Battery】Equipped with a 4000mAh battery capacity, providing extended use for long rides without frequent recharging. 【Versatile Sound Options】Features a 120dB horn with three switchable sounds, adaptable to various riding scenarios and safety needs. 【Flexible Lighting Modes】Multiple lighting options including single light, dual strong light, dual weak light, and flashing mode for different riding conditions. 【Dual Control System】Utilizes both dual-line control and button operation for easy and intuitive handling while riding. 【Lightweight and Compact】Weighing only 150g per light unit and measuring 112*61*28mm, it's easy to install and carry without adding significant weight to your bike. Specifications: Battery Capacity: 4000mAh Weight: Approx. 150g Brightness: 900LM Dimensions: 112*61*28mm Horn Volume: 120dB with 3 switchable sounds Cycling Computer Types: GPS/Wireless Control Method: Dual-line control + button operation Light Modes: Single light, Dual strong light, Dual weak light, Flashing