Donemore Bike Light Set, Bicycle Headlight with Horn and Speedometer Odometer, Bike Front Light and Tail Light, Fits All Road & Mountain Bike Features: Three in one design: The combination of bicycle lights and odometer: This design not alone provides lighting function for cyclists, but also displays real-time riding data, such as speed, mileage, etc., allowing cyclists to keep track of their riding status at any time. Backlight function: At night or in low light conditions, the backlight function can ensure that cyclists can clearly view the Speedometer data, improving cycling security. Type-C upgrade: Using the Type-C interface for charging or data transfer makes charging more convenient and efficient, while also improving device compatible. Wireless Speedometer data: Wireless design chip free from the constraints of traditional wired Speedometer data meters, making installation and use more flexible and convenient. Cyclists can adjust the position of the stopwatch as needed to obtain the most viewing angle. High brightness headlights: High brightness headlights can provide sufficient lighting for cyclists at night or in dimly lit environments, ensuring that they can clearly see the road ahead and improving the security of nighttime cycling. High strength speakers are compact and convenient: High strength speakers can fire a brassy sound when needed, reminding other road users to meet attention to the exist of cyclists. Meanwhile, the compact and convenient design ensures that the entire device does not impose additional burdens on cyclists. Lightweight Cycling: The equipment adopts a lightweight design, so that cyclists do not feel heavy or inconvenient when carrying and using it. This helps cyclists maintain a relaxed riding state and enjoy the treat of cycling. Real time data, no delay, no waiting: able to display cycling data in real time, ensuring that cyclists can right understand their cycling status. The delay free feature allows for fast data updates, allowing cyclists to obtain the latest data without waiting. Product Description: Name: 3-in-1 Wireless Meter Horn Light Color: Black Battery capacity: 2000mAh Brightness: 450LM Speaker: 120 decibels (5 different sounds can be switched) Table type: wireless Control: 2 line control+buttons Light mode: Strong light/flickering Product size: 11.5x3.5X3.6cm (4.53x1.38x1.42 inches) Packaging size: 13x5.7x6cm (5.12x2.24x2.36 inches) Gross weight: 243g (0.54 pounds) Package Contents: 1x front lights 1x host 1x fixed base seat 1x tools 2x screws 1x speed sensor 1x fixed zip ties 1x magnet 1x charging cable 1x lighting and speaker line controller 1x wire controlled fixed rubber ring High strength speakers are compact and convenient: High strength speakers can fire a brassy sound when needed, reminding other road users to meet attention to the exist of cyclists. Meanwhile, the compact and convenient design ensures that the entire device does not impose additional burdens on cyclists. Lightweight Cycling: The equipment adopts a lightweight design, so that cyclists do not feel heavy or inconvenient when carrying and using it. This helps cyclists maintain a relaxed riding state and enjoy the treat of cycling. Real time data, no delay, no waiting: able to display cycling data in real time, ensuring that cyclists can right understand their cycling status. The delay free feature allows for fast data updates, allowing cyclists to obtain the latest data without waiting. Donemore Bike Light Set, Bicycle Headlight with Horn and Speedometer Odometer, Bike Front Light and Tail Light, Fits All Road & Mountain Bike Features: