Rechargeable Disc-O Select technology features three selectable colors of red, green, and blue, or color-changing Disc-O mode. Disc-O mode features unique color-blending pattern. Machine-washable slip-on bandana with fun, passive-reflective pattern. Easily slides over your dog's neck as a bright addition to their existing collar. 360 degrees of illumination. Weather-resistant. Cut to fit from 12'' to 27'' (30.5cm - 68.6cm). Recharges in approximately 1.5 hours with micro USB cable (not included). Run time: 5.5 hours. Hang packaged.