This innovative dressing mixer from Prepara allows you to create healthy and tasty salad dressings in a matter of seconds. The mixer has a speedy 14000 RPM spin with s simple push of a button. This ensures quiet aerating and emulsifying of vinaigrettes, dressings, and marinades. The dressing mixer has a capacity of 6oz / 180ml and is made from 100% BPA free plastic. The shaker has measurement markings in oz, cups, and ml and features a drip free 360 degree pouring spout. The dressing mixer has a silicone stopper that will seal in flavors for storage in your fridge. The Tornado dressing mixer is dishwasher safe, has a 5 year warranty, and runs with 2 AA batteries.