This saves your battery from being depleted as it has a magnet that shuts the screen off upon insertion. It is very handy and protects the blackberry (or at least the lower portion of it) while still providing access to the vital buttons on the device.As a pouch for your device, this item is superb as most people (or at least I) do not have enough space in our pockets to contain the PDA. For those that want to keep their PDAs in their pockets, this item provides resistance against scratches and the like. For females, this item easily complements your handbag since it clips on nicely to the edge, thereby providing easy, and more importantly quick, access.