ZETE USB Rechargeable LED Pet Dog Collar Variable Light Speeds 3 Settings Rechargeable LED lights using any Micro USB cable / port. Saves time and money for expensive batteries. Micro USB cable sold separately. Protected in durable nylon mesh, the lights are available in 3 settings: Steady, Fast Flashing, and Slow Flashing. Protected in durable nylon mesh, the lights are available in 3 settings: Steady, Fast Flashing, and Slow Flashing. Please measure your dog's neck to ensure the correct fit. Keep your dog both safe and stylish with this LED lighted nylon collar!