Just another gimmick to waste your money. This cannot replace flossing. I have one and speak from experience.
What's the difference between the standard and pro version? I've had my standard version for over a year now and still going strong, I feel it works great, getting to parts of the mouth a toothbrush cannot reach
Yep, agree with the other poster. Never works. Even after a full charge, you switch it on - doesn't work. Put it back on the charger briefly. Now switch it on, it works. Notoriously unreliable. I went back to floss sticks (like tebe, but the ones from home bargains), it is easier, quicker, does a better job and less messy!!
You might want to also consider Panasonic's Water Flosser Cordless Travel EW-DJ10 - @ £25 from Shavers UK. Works extremely well and doesn't complain when used with rechargeable AA batteries to keep running costs low. If ever you get caught out, pop in a couple of disposable batteries and away you go. Inexpensive replacement tips and easy to take apart when you want to thoroughly clean out. I've had it for close to a decade and it's still going strong.
If you are considering buying this you need to know it doesn't remove the need to floss manually. They are also hopelessly unreliable.