Review (4/5): Great for Traveling!
Works great for traveling with the USB charging. Other brands I have considered need an adapter for 240 volts. I use my cell phone charger to charge the H2ofloss, so it's one less charger to carry, too. I gave it on less star on usability because the water pressure strength and power buttons are located where I grip the unit. Also, there is no way to lock the buttons for traveling to keep the unit from accidentally powering on in a suitcase. Water pressure strength is as strong or stronger than my home unit.