This LED dog collar enhances nighttime safety with built-in highly visible LED beads that illuminate your pet in low-light conditions. The collar offers nine light options including six single colors (white, red, green, blue, purple, yellow) and three lighting modes (steady glow, fast flashing, pulsing) to help your dog stay visible and avoid potential hazards during evening walks. The adjustable nylon design comes in three sizes to fit small, medium, and large dogs comfortably around the neck. Featuring IPX7 waterproof construction, this collar functions reliably even in wet conditions, making it suitable for all-weather use. The rechargeable 300mAh battery provides four to six hours of runtime depending on size, and recharges fully in approximately two hours via the included USB charging cable. The durable nylon material withstands regular outdoor activity while the LED technology ensures long-lasting performance. Size options include Small (adjustable 13.78-15.75 inches), Medium (adjustable 15.75-19.69 inches), and Large (adjustable 19.69-23.62 inches) to accommodate various dog breeds and neck sizes. The lightweight design adds minimal bulk while maximizing visibility and safety during nighttime activities.