A. One glowing dog collar (blue), a USB-rechargeable LED collar that fits various sizes and is a safety collar suitable for small, medium, and large dogs. B. Suitable for many dog breeds - There's no need to spend money on ill-fitting collars. This collar is adjustable to fit pets with a neck circumference of less than 50 cm. The LED dog collar can be cut to fit different dog breeds and is also suitable for cats or other pets. C. Supports charging via Micro USB - This LED pet collar can be used with mobile phone chargers, laptops, personal computers, tablets, and smart TV power adapters (comes with a Micro USB data cable). Note: Only 5V USB adapters can be used. D. High brightness - It uses modern LED lights to emit light, allowing your dog to be seen at night and in dimly lit environments. This LED dog collar helps you notice your dog in advance and avoid accidents during nighttime walks. E. Waterproof - It can be used in the rain and is suitable for various environments. It is also suitable for dogs to wear during walks and camping trips. The collar is adjustable for your dog's comfort. F. Three lighting modes: fast flashing, slow flashing, and constant light. You can switch between them by simply pressing the button on the collar. It is equipped with an 80mAh battery that can be used continuously for 6 - 10 hours after a 1.5-hour charge.