Hassle-free wireless speaker Digilicious The Libratone Zipp offers eight different covers. The battery-powered Libratone Zipp uses PlayDirect technology to stream music without the need for a Wi-Fi network. PlayDirect works in conjunction with AirPlay technology, creating a direct Wi-Fi connection between the Libratone Zipp and any compatible device, such as an iPhone or computer. Provides four hours wireless 360-degree sound streaming on a full charge.