Welcome to our store,hope you enjoy your day! 100% New. Stylish and fashion appearance. Rain resistant, durable and adjustable. Comfortable to wear, it will not hurt your pet. With buckle, easy and convenient to wear and remove. Type: Dog Night LED Collar Material: Polyester LED Powered by: 2 x CR2032 Button Batteries (Not Included) 3 Lighting Modes: Constant on, Strobe and Flashing(with Switch to Select) S Length: 35cm - 43cm/13.65" - 16.77", Width: 2.5cm/0.98" (Approx.) M Length: 40cm - 48cm/15.6" - 18.72", Width: 2.5cm/0.98" (Approx.) L Length: 45cm - 52cm/17.55" - 20.28", Width: 2.5cm/0.98" (Approx.) XL Length: 52cm - 60cm/20.47" - 23.62", Width: 2.5cm/0.98" (Approx.) Features: Adjustable, Comfortable, Durable, Camouflage Notes: Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements, allow for slight size differences. Package Included: 1 x LED Dog Night LED Collar (Button batteries are not included.)