Feature: 1. Portable: It is small enough to fit in a pocket, and uses two AAA batteries (Not Included) to generate ultrasonic vibrations. Good helper for home, outdoor, barbecue and party. 2. The Best Gift: A high quality beer bubbler is the best gift for dad, for husband, for your best friend or anyone, from professional homemade brewers to occasional drinkers. 3. High Quality: This beer foamer is made of high quality ABS material, which is durable and has a long service life. This beer frother can make beer in the glass froth. 4. Ultrasonic Vibration: Accurately calibrated ultrasonic vibration activates the gas through the water in the beer to produce bubbles of uniform size and provide perfect foam. 5. Easy to Use: After installation, insert the bubbler into the bottle. Press the power button to produce richer and smoother beer foam within a few seconds, and the foam lasts for a long time. Specification: Item Type: Beer Foamer Material: ABS Function: Make Beer Foam Scope of Application: Beer, Champagne, etc. Battery: AAA Dry Battery x 2 (Not Included) Working Current: Less Than 300mA Rated Current: Less Than 0.3A Rated Power: Less Than 1W. Package List: 1 x Bubbler2 x Nozzle1 x Manual