This water jet dental cleaner earned the The Best rating from the Hammacher Schlemmer Institute because it cleaned teeth more effectively, comfortably, and easily. The Best model thoroughly cleaned between teeth and along the gumlines leading one panelist to say “Fantastic. Great for cleaning gently.” It is also clinically proven to remove 99.9% of plaque from targeted areas, thanks to 10-100 psi water pressure and 1,400 pulses per minute. Panelists agreed it was the most comfortable to hold and gentle on the gums, thanks to a slim, ergonomic handle and 10 water pressure settings. With generous reservoir and electric sonic toothbrush. Includes five water flosser jet tips, two toothbrush heads, and travel case. AC plug. 10 3/4" L x 7 3/4" W x 5" D. (2 1/2 lbs.)