This "Bialetti" milk whipper turns cold or hot milk into creamy milk foam in mere seconds. Using a convenient switch, you can change whipping speed and so adjust milk consistency. The whipper is battery-powered (2 batteries are included in the set).EXTREMELY CONVENIENTThe whipper is battery-powered, so using it is extremely convenient. You won\'t have to worry about the cord getting in your way or look for a nearby socket. Because of this, you\'ll even be able to take this whipper with you when going on a trip. ADJUSTABLE WHIPPING SPEEDUsing a simple switch, you can change whipping speed and so control the consistency of your whipped milk. HIGH QUALITYThe whipper is made from sturdy stainless steel, so it\'s extremely durable.CONVENIENT SIZEThe whipper is 4.5-cm-wide and 25-cm-long. You\'ll be able to conveniently whip a larger quantity of milk in a tall dish.