Compatible Fountain: The replacement pump and host are compatible with Smartoo wireless cat water fountain PTM-643 In the Box: Include one replacement pump and one replacement host for Smartoo wireless cat water fountain PTM-643 Tip: Please do not rinse the host with water Tip: To extend the service life of the pump, please clean it every 1-2 weeks If you haven't received the pump, please contact us, and we'll take care of it right away Package includes one replacement pump and one replacement host for Smartoo wireless cat water fountain PTM-643.