Pet LED Safety Dog Collar USB Rechargeable, Model 2015, Brite Lite USB Rechargeable safety Pet Collar By C.Concierge tm USB cable Included, recharge auto shut off No expensive battery replacements 3 formats Steady, Flash, Blink Patterns can be seen up to 1200 feet Light weight L.E.D. design. Heavy Duty Collar clips fast release Red Blue Pink Sml to 16 Med to 18 Lg to 20 inches