This is an amazing cordless water flosser with rechargable batteries. I take it everywhere. Great for when I can't brush right away but, I can at least floss with this water flosser to remove the food from my teeth. I personally place a little mouth wash into the tank with the water to floss. It has 3 modes normal mode, soft mode and a pulse mode and is set with a 2 minute timer. It's very sturdy and the tank does not leak, which is amazing. The battery lasts a very long time, like days without needing to recharge it. I recommend this cordless water flosser highly and know you won't be disappointed. So easy to fill and use!