Plus Aqua Automatic Pet Water Dispenser Cordless Pump, Cordless Tank Quiet Design Notification Lamp Large Capacity I believe it's unused. I assembled it once to check if all the parts were there. There's no instruction manual, but it seems like everything else is included. I haven't put any water in it. The activated filter, a consumable, is not the original but functions the same and works properly. I don't plan to use it, so I'm offering it to someone who can.