The Lapasso USB Speed Adjustable Milk Frother in Black is a handheld frother powered by a wireless source. With a capacity of 8 oz, this frother allows for convenient frothing of milk for various beverages like coffee and hot chocolate. The adjustable speed feature gives you control over the frothing process to achieve your desired consistency. Perfect for home use, this model offers versatility and ease of use for creating delicious frothy drinks.