BlackBerry 8800 Series Koskin Swivel Holster - Black - Bulk Packaged Built-in grooves constructed of hard plastic run along the front and back insides of the case to pro Convenient swivel clip; Rotates vertically, horizontally and to various degrees in between for maxim Proximity-sensing technology; Saves power and maximizes battery life by automatically shutting off Proximity-sensing technology; Can activate different notification settings for phone Koskin leather exterior