Cordless Water Flosser, USB Rechargeable, 3-Mode, 4 different Jet Tips by SOOCAS W3 [SEP] The Removable/detachable Water Tank is not removable nor detachable. I studied the user manual and no mention on how to remove it so you can clean it.<br /><br />It doesn't come with an adapter so unless you have an extra you will be charging with your laptop. FYI will not operate while charging.<br /><br />The full water tank lasts for 50 seconds of continuous flossing.<br /><br />A Full battery will last 30 minutes before needing a recharge. Charging time:4-6 Hours. Charging voltage:5V.<br />Cleaning modes are gentle/standard/pulse massage. High pressure water pulse, 20-140PSI water pressure. ** Make sure to not lose the little white tab that covers the charger port - you'll need it to keep it waterproof.