Bicycle light and horn two-in-one: This bicycle light is combined with a high-pitched horn. It is equipped with a high-brightness dual LED bulb with a volume of 120db, which is used for high beam and low beam, with a brightness of up to 300 lumens, which fully meets the city's daytime and nighttime commuting. Loud and clear sound: The bike horn has a powerful sound output of 120 decibels, ensuring it can be heard in any cluttered environment. Whether alerting pedestrians or warning other vehicles, this horn gets everyone's attention. You can also switch to your favorite ringtone 7 Operating Modes: This bicycle light features seven different operating modes, including four horn modes and four lighting modes, allowing you to customize your experience. The speakers and lights are controlled by independent buttons, making it easy to switch modes as needed. Lightweight and waterproof design: This bicycle light weighs only 44 grams and has a built-in lithium battery. The product is lightweight and portable, making it lightweight and burden-free for riding. It's also waterproof for everyday use, making it easy to handle various weather conditions Convenient USB Charging: This bike light has a built-in 350mAh lithium battery that can last up to 2 hours on a single charge. The USB charging feature allows you to easily charge your lights anytime, anywhere without the need for additional tools. In addition, tool-free installation and quick disassembly also facilitate your portable use.