Mophie ( has announced the US$79.95 juice pack air for the iPhone 4, a new design now available at Apple retail and online stores. 

Delivering the same on-the-go power to the latest Apple smartphone, the new juice pack air is lightweight and thin. It features a bottom cap snap design for access to the dock connector and a completely open top.

The juice pack air snap case joins the juice pack family, providing an additional design and aesthetic choice for iPhone 4 users. The rubber finish is designed to prevent slipping and provides the same protection from device bumps, bangs and drops as its predecessors.