Pretty sunshine of your life、welcome to my storeFeatures:100% Brand new and high quality!the water temperature can not be more than 40 degrees the brown wire connects the positive pole "+" the blue cable connects south pole "-" the yellow cable doesn¡¯t need to connect. Specifications:Condition: newColor:gray and blackDimensions: 98mm (height) 38mm (diameter)External diameter: 12mm Internal diameter: 9.7mmNominal voltage 12 vOperating voltage: 6 - 15 v (max 18 v)Weight:150gPackage Included:1x Pump Water Pump LineMy Store Provided Intimate Service.