High Visibility and Safety – Red LED rear light with 240 degree wide angle illumination ensures clear visibility and safer cycling at night. Long Battery Life – 2600mAh with up to 50 hours runtime, ideal for commuting and long rides. Five Lighting Modes – Multiple settings including steady beam, fast flash, running light and breathing mode for different riding conditions. USB Rechargeable – Convenient charging through power bank, computer or adapter, eliminating the need for disposable batteries. Durable and Waterproof – IPX4 waterproof rating with robust PC housing and silicone strap mount, designed for reliable use in wet weather. Specifications LED Type: 2835 Red LED Light Color: Red Illumination Angle: 240° Battery Capacity: 2600mAh Modes: 2× Running Light, Breathing Mode, Steady, Flash Input: 5V / 1A USB Waterproof Rating: IPX4 Material: PC plastic, silicone strap Color: Black housing with red light