Review (4/5): Good for travel
I've had water flossers before - they're honestly pretty fantastic since they can get in places and in pockets where regular floss can't. If you get the right one and know how to use it, it's a lot like having your own dental assistant to help clean your teeth. My last water flosser gave up the ghost after I dropped it while moving (RIP water flosser!) so this seemed like it'd be good to try out.
Upon using this I immediately noticed that the lowest setting wasn't shooting out water hard enough for me, so I turned it up to the max. That worked better, but it still didn't have the oomph that its larger counterparts did. So if you're looking for a particularly intense water flosser, this isn't really going to be it. On the other hand, this would probably do well with people who want lower pressure.
The fact that this is handheld is pretty nice, although it does take a while to get used to since I'm used to the smaller water flosser nozzles. It's a bit like holding a really huge toothbrush in some aspects, if that makes any sense. The water being in the unit is an OK feature but if you like being very thorough and doing several passes, you'll more than likely need to refill at some point. That part isn't a big hardship as filling this up is a breeze and one of the nicest aspects of it. It's insanely easy to do and isn't needlessly complicated.
In the end the main draw for this would be that I can take it with me on trips, which I almost certainly will. It's far easier to pack into a travel bag or throw into a suitcase than a standard water flosser with a huge tank would be. I just don't think that I'd prefer this for daily use over a more traditional unit, especially since I like my water pressure a lot higher than that. Still, for what it is, it's not bad and it'd be a good little gadget for travelers.