Can't leave without it!
I had ordered this device once before while traveling China in 2016.  It works so well that I ordered the 2nd one as spare in 2017, prior to my trip to Europe.  I had used several other portable water irrigators, and this one is the best.  It produces excellent water pressure and best of all, it is chargeable using USB connection.  Highly recommended!
Rating: 5 stars