• Bicycle tail light with 4 lighting modes. • Equipped with 12 super bright LEDs and a 180° horizontal beam angle for greater nighttime safety. • 400mAh rechargeable battery with charge indicator (red: charging, green: fully charged). • Charges via USB-C compatible with chargers, mobile power, car chargers, and other devices. • Waterproof housing with IPX4 rating, ideal for riding in the rain. • Easy tool-free installation, with adjustable buckle straps and tilt angle adjustable up to 45°. • Compact and lightweight (8.4 x 4.8 x 2.2 cm, 29 g), also usable as a warning light on helmets, pets, backpacks, scooters, strollers, and wheelchairs.