The SpotLit XL Rechargeable Collar Light isnt just bigger and brighter, its now micro-USB rechargeable for the ultimate in convenience. Featuring a durable, stainless steel carabiner clip, this Collar Light attaches quickly and securely to the D-ring of any collar or harness to keep your pet seen and safe at night. With Disc-O Select technology, you can leave it in color-changing Disc-O mode or choose from four different colors, making it easy to keep track of multiple pets at night.