GREENCYCLE Bike Tail Light, LED Bicycle Rear Light with Changing Colors, USB C Rechargeable Rainbow Bike Lights, Auto ON/OFF, IP65 Waterproof,7Colors15Modes Suitable for Cycling Scooter Motorbike,4PK

【Super Bright & Colorful】Greencycle bike taillights feature 90-lumen high-intensity 30 LED beads, ensuring visibility even in fog, rain, or darkness. The 280° floodlight optical lampshade softens the light, preventing glare and protecting the eyes. It significantly enhances safety by improving visibility for riders behind you. 【15 Light Modes and 7 Colors】 The bike rear light offers 15 modes and 7 colors, allowing for 100 lighting combinations to suit your preferences. Easily customize your ride to match your mood or stand out. With a memory function, it retains the last used mode for your next ride, making your bike's taillight more eye-catching for an enjoyable cycling experience. 【Automatic Brake Protection & Enhanced Safety】The brake light automatically activates with smart sensors when braking, providing a clear warning to others. The super bright light is highly visible, staying illuminated for 2 seconds to catch attention and improve road safety. 【Light Sensing & Auto ON/OFF】Built-in smart light and motion sensors automatically control the taillight. In AUTO MODE (Slow Flash/Breath/Blinking Mode), the taillight turns off in daylight after 30 seconds and back on at night, while still maintaining the brake function. If auto mode is off, ambient brightness and vibration won't affect the taillight. 【USB Rechargeable & IP66 Waterproof】Bike lights for night riding come with a USB Charging cable, can change from your computer, power bank or any device with a USB port and withstands heavy rain with IP66 waterproofing. Reliable for night riding and outdoor use, it stays functional in wet, foggy, or cloudy conditions, keeping your ride safe.