Engineered using patented fluid and sound technology to enhance the aroma, texture and taste of bottled or canned beer Sound waves convert the beers natural carbonation into densely compacted micro bubbles that creates a rich, creamy head on your favorite beer Works with all beer styles including IPA's, pilsners, ales, stouts, porters, lagers, shandy's, etc. Powered by 4 standard AA batteries. Lightweight and durable making it ideal for outdoor activities, picnics, camping, tailgating, etc. Does not require Co2 cartridges. Easy to use: insert beer, pull forward to tap, push back to top Compatible with 12 to 25oz cans and 12oz bottles, The soft base on the Waytap is designed to be removable for cleaning