Features: 1. Small size, long beam distance with a display screen. High brightness T6 lamp bead. 2. 4 light modes: high bright, low bright, flash, yellow light, for different situations. 3. Big screen display, anti-dazzle design, with battery display function. 4. Bike speed meter function, 5 display mode. 5. 1500mAh big capacity lithium battery, USB charging, 4h charging time, 3h battery life. 6. 120DB horn, 6 sounds to switch. Life waterproof. 7. Easy to detach or install. Front light: smart speed beacon horn light 350 lumens, quick release design, USB charging, 120 decibel speaker Built-in lithium battery, USB interface suitable for multiple charging methods Intelligent power display: large display, dazzling design, when the power is small, can be connected to a wired computer to observe the speed Four lighting modes, suitable for different road conditions: strong light, low light, flash, yellow light Life rainstorm grade waterproof Package Included 1 x Odometer Bike Horn Light 1 x Bracket 1 x Connector 1 x Key Switch Notes: 1. Please allow 1-3cm error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you