This collar will help others see both you and your dog while out on walks at night or in the dark! The collar were designed with you in mind and used top quality components. What makes Dogs in Play collars unique? Three different light settings - Steady, Slow or Quick Flashing. Lightweight for your dog"s maximum comfort. Nylon webbing over the light strip for maximum durability and protection from water. LED lights are RED and very bright to provide visibility up to 1,000 Feet in the dark. This safety LED glowing dog collar is weatherproof, shock-resistant and lightweight, ideal for the active dog. Please note this dog collar is not recommended for tie-outs or be used with a leash if your dog pulls severely!! Material: Black nylon webbing + 6 super bright LEDs +colorized ribbon LED cover+ ABS battery case + POM buckle. Flashing modes: slow,faster or keep on Battery: 2 CR2025 batteries that can last up to 100 hours Size: W-2.5 cm X 45 cm extends till 55 cm. Color: Red