The rechargeable NiteHowl max is ruff, tuff and fluff-friendly. Uniquely designed for fluffy, thick-coated dogs, its extra-wide, weather-resistant band lays flat on top of their coat, ensuring it doesn't get lost in the fluff. With a full 360 deg ring of light, slip-on this necklace so you can always spot your pup from the yard to the park. Simply press the button to shine, cycling through Disc-O select's three selectable colors of red, green and blue, plus color-changing Disc-O mode for a unique color blend. Cut the band on its end for a ideal fit, with an adjustable size from 12 to 27 in. Recharging in 2 hr with a micro USB cable, NiteHowl Max has a long runtime of 10 hr to keep up with your fluff ball.