Durable and rechargeable LED safety necklace. Made with flexible polymer that is illuminated by bright LEDs and can be recharged for hours of nighttime fun and safety. With the Disc-O Select function， identifying multiple dogs is easy with the ability to choose from one of three selectable colors (red， green， blue)， plus a unique Disc-O mode. By illuminating the polymer with multiple colors at the same time， Disc-O mode creates a flowing color-blending pattern that is as fun as it is functional. Simply trim the flexible polymer to a custom fit， give the button on the durable， weather resistant housing a quick press， and the entire collar lights up a full 360 degrees， making your dog clearly visible from all angles. 4-hour run time. Quickly recharges via micro USB (not included) in just an hour.