【Create Bar-Quality Foam in Seconds】Just press the button and watch the magic happen! The dispenser sends out 40kHz ultrasonic vibrations to create Rich, Creamy foam just like beer from a real tap 【Fits Most Canned Beer】 Works perfectly with open 8, 10, 12 to 17 oz canned beer 【Take it anywhere】Compact lightweight, and super easy to use and clean. Enjoy perfectly opured beer whether you are at home, having BBQ outdoors or on a picnic. 【Battery Powered Convenience】Just pop in two AAA alkaline batteries and enjoy up to 3.5 hours of use (By normal use it takes more than three months. no cords. no hassle. Brand : GREEN HOUSE (JAPAN) Dimensions: 71.5×94.7×31.3mm(2.8 x 3.7 x 1.3") Weight : 2.6 oz Power: AAA alkaline batteries x 2 (sold separately) Continuous operating time: 30 minutes Heat-resistance temperature range: -5°C to 60°C (23°F to 140°F) Suitable for 250ml (8 fl oz), 330ml (10 fl oz), 350ml (12 fl oz), 500ml (17 fl oz), beer cans *The caliber of the can is approx2.2". *Beer not included Instructions: English