6 Light Modes for Customization: Choose from six different lighting modes, including constant, quick flash, breathing flash, strong flash, flashing, and single flash. Customize your light to suit your riding conditions, from low-light streets to busy roads Digital Power Display: The built-in digital power display lets you easily monitor the remaining battery life of your tail light, ensuring you're never caught without power. Stay in control of your ride and avoid unexpected power loss Waterproof and Design: Designed for all-weather riding, the Smart Cycling Tail Light boasts an IP55 waterproof rating. Whether it's rainy or sunny, you can rely this light for safety every ride, knowing it can handle harsh conditions Vibration Sensor Activation: With its vibration sensor, this tail light automatically turns when it detects movement. No need to manually it – it activates as soon as you start riding, providing instant visibility and convenience