Libratone Zipp, Classic Collection. Comes with a color variation of three wool sleeves- Petrol Blue, Raspberry Red, Pepper Black. The Libratone Zipp is a battery-driven speaker designed to give you high-end sound, freedom of choice and freedom of movement wherever you are. The portable Libratone Zipp leaves the house with you to work, on picnics, camping trips etc. Setting your music free has never been easier. Battery Included: Lithium Ion.