This is an unopened item. I purchased it in March, but I am selling it because I will not be using it. This toothbrush uses ultrasonic water jets to powerfully remove stains from the surface of teeth. - Model Name: EW-DJ42 - Function: Removes stains from the surface of teeth with ultrasonic water jets - Size: Height: 29.0 cm, Width: 5.2 cm, Depth: 5.7 cm - Brand: Panasonic - Series Name: Doltz Thank you for looking.