Features 1.Suitable for family gatherings, business meetings, bars and other entertainment venues. 2.Built-in 1800mah lithium battery, easy to carry. 3.It can make the beer in the glass foam, making the party more atmosphere. 4.Through the ultrasonic vibration, the beer will produce perfect foaming, making the beer taste better and aromatic residue. 5.The chassis has a silicone pad to fix the bubbler and not spill beer. specificationFeatures: 1. Suitable for family gatherings, business meetings, bars and other entertainment venues. 2. Built-in 1800mah lithium battery, easy to carry. 3. It can make the beer in the glass foam, making the party more atmosphere. 4. Through the ultrasonic vibration, the beer will produce perfect foaming, making the beer taste better and aromatic residue. 5. The chassis has a silicone pad to fix the bubbler and not spill beer. s: Working principle: ultrasound Vibration frequency: 110KHZ Working voltage: 3.7V Maximum working current: 2A Charging current: 500ma Battery capacity: 1800mah Charging time: 4H Instructions: 1. Turn on the toggle switch 2. Activate the tray and put half of water in it. 3. Fill the cup with 60% of beer 4. Press the ultrasonic touch button to generate foam, and the blue light flashes when working. 5. The red light is on when charging, and the light is off when fully charged. Package List: 1 * Beer Foamer 1 * User Manual 1 * Charging Cable Note: 1. Must put half of the water in the tray, not beer 2. Pay attention to water and beer, try not to splash the touch button, avoid triggering 3. Must be cold beer 4. This product is only valid for glasses PackageList