Dynamic Sound Adjustment: The 140dB super-loud bike horn features multiple alarm modes, allowing real-time tone selection for varying environments, making it a perfect choice Easy Thumb Control: The double-button design is strategically placed near your thumb, allowing quick access to the bike horn and light without fumbling. This intuitive layout eliminates the need to search for buttons while riding High Visibility: This bike horn features 4 ultra-bright LED beads with 5 light modes, significantly enhancing your visibility during night rides. The powerful illumination ensures you're easily noticed by motorists and pedestrians Eco-friendly Long Runtime: Designed with a rechargeable battery, the Bike Horn ensures prolonged usage without frequent recharging. The high-capacity power source enhances durability All-Weather Protection: The bike horn's waterproof build safeguards against rain, humidity, and splashes, ensuring uninterrupted performance. to damage, it's a reliable safety tool for cyclists in any climate Color: Black Material: ABS Package Contents: 1 x Bike Electric Bell 1 x Taillight Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.