Hello I am Koyama, a writer of home appliance. My job is to use a wide range of products from the latest digital equipment to consumer electronics appliances, test the product and introduce to the reader. Electric toothbrush is one of the long term favorite home appliances by its user. There are various types of electric toothbrush such as home use electric toothbrush, travel use electric toothbrush, etc. I also owned few electric toothbrush, and my favorite one will be “Pocket Doltz” by Panasonic.