GREEN HOUSE Handy Beer Server - New, Unused This handy beer server lets you create beer hall-quality foam from canned beer. It uses ultrasonic waves that vibrate 40,000 times per second to create fine, creamy foam to your liking. Runs for about 30 minutes on 2 AA batteries. One-touch operation to switch between liquid and foam. Perfect for everyday evening drinks, parties, and outdoor activities. - Model Name: Ultrasonic Handy Beer Server - Size: W120mm x D73.6mm x H134.6mm - Materials: ABS resin, silicone - Power: 2 x AAA alkaline batteries (sold separately) - Compatible Sizes: 330ml, 350ml, and 500ml canned beer Everything in the photos is included. Operation has not been tested. Although new and unused, the outer box has some damage due to home storage. Please check the photos carefully and understand before purchasing. Thank you for looking.