Dealzip Inc Fashion Fancy Multi-Function Adjustable Heavy Flashing LED Swiss Light Dog White Pets Night Safety Weave Guard Training Collar Multiple Dog Collar Brand New and high quality. Battery: 2PCS CR2032 button batteries. 3 modes to change by click of a button. Help you keep track of your dog in darkness. Size S: Width: 2.5cm; Length: 35-43cm(S);40-48cm(M);45-52cm(L);52-60cm(XL). Dealzip is a registered USPTO trademark No. 86610217