This bike wheel light consists of 20 bright LED lights, making your wheel visible from all angles during night riding. Three lighting modes: steady, fast flash, and slow flash. Press the power button to cycle through modes. GREAT SAFETY AND COOL RIDING: Bright wheel lights enhance visibility at night, making your bicycle more noticeable and safer. No minimum riding speed required. Colorful spoke lights add style while riding. Secure mounting ensures lights stay firmly in place. LONG BATTERY LIFE AND WATERPROOF: Up to 8–10 hours of continuous operation. Powered by one AAA 1.5V battery (not included). IP65 waterproof rating—designed to perform reliably in rain or snow. For best results, avoid prolonged exposure to heavy rain. EASY INSTALLATION AND REMOVAL: Fits most bicycles with standard spokes, including mountain bikes, road bikes, hybrid bikes, triathlon bikes, and touring bicycles. Installation steps: insert battery into the battery case, mount the case onto the spoke using screws, then wrap the LED string around the spoke. Specifications: Product Name: Bicycle Spoke Light Light Source: High-brightness LED Compatible Wheel Size: 14–29 inches Power Supply: 1 x AAA 1.5V battery (not included) Modes: Steady on / Slow flash / Fast flash / Off Color: As shown in product images Package Includes: - 2 x Bicycle Spoke Lights Made from durable materials for long-term reliability. Simple installation and replacement. Precision manufacturing ensures consistent quality and secure fit. We stand behind our products with responsive customer support.