• Luminous dog safety collar made of durable nylon, providing 500 m visibility to monitor your pet outdoors at night. • 3 lighting modes: fast flash, slow, and steady, operating for more than 8 hours per full charge. • Rechargeable via USB cable, no need for battery replacement, easy to use and environmentally friendly. • Waterproof function, usable on rainy days. • Adjustable with buckle and D-ring to connect with leash.