Kats Botanicals' Beverage Butler is a battery-powered mixing system uniquely designed to blend Kratom powder with water, coffee, juice, or another beverage. The Beverage Butler is portable, cordless, and powered with two AA batteries (not included). The whisk is designed for easy cleaning, too; just use warm water and dish soap after each use, taking care not to allow water into the electronic housing. Whisk length is 3¾ inches, making it perfect for use with most single-serving mugs, cups, and glasses.