14-liter rechargeable battery milker Top manufacturing quality for all countries worldwide. The battery works for 3 hours. The container is stainless steel. 60-watt suction device, high performance. Suction is done using pulse method, which simulates hand grip by squeezing and releasing. .. The milker is safe for the animal, due to the pulse method of milking. There is a valve in the milking tubes to control the milking process. .