h2ofloss water flosser portable dental oral irrigator with 5 modes, 6 replaceable jet tips, rechargeable waterproof teeth cleaner for home and travel -300ml detachable reservoir (hf-6) h2ofloss <b>specifications:</b><br> voltage: 100-240v ac 50/60hz<br> charging time: 4-5h(adapter is not included) <br> battery lasts:10-15 days<br> water pressure: 20-100psi<br> water frequency: 1200/min<br><br> <b>tips: </b><br> 1. when using for the first time, please select the low mode. <br> 2. please put the floss tip into your mouth before the machine starts. <br> 3. water tank is detachable but it takes a bit effort to remove it at first time. <br> 4. please keep water tank empty after each cleaning. <br> 5. any issues about using, kindly make a q&a question to let us know. <br><br> <b>package: </b><br> 1x oral irrigator<br> 5x different nozzles<br> 1x storage bag<br> 1x usb charging cable<br> 1x user manual<br>