The invention discloses a light up buckle for use with a dog collar. Thisbuckle design comprises aPlastic Computer Board (PCB) which incorporates LED's, a mini-USB port, aswitch and a rechargeablebattery. The lithium-ion battery is housed within the buckle assembly, and isprotected from water bymeans of rubber seals when the buckle is in the closed or locked position.The main components are molded from translucent plastic, to allow the LED's toilluminate theassembly when switched on. There are multiple settings for the LED's to allowfor a steady illumination orvarious flashing/pulsing settings. The buckle is intended for illumination atnight to aid the visibility of anowner's canine that wears the buckle on the collar.The buckle can be fitted onto a collar strap or body harness and so hasmultiple uses andapplications.The buckle design is rounded and has smooth edges to ensure no discomfort isexperienced bythe canine. There is a trigger switch located on the underside of the bucklewhich is operated by pressinga rubber button that protrudes from the plastic casing.The entire assembly is water-resistant, by means of two rubber components thatinterlock whenthe buckle is closed. The pressure between these two rubber plugs ensureswater cannot get access tothe electronics and battery.