Finished in premium lambskin leather, this holster offers unparalleled comfort and elegance. It also comes with a stylish swivel clip, so you can adjust it for maximum comfort wherever your day takes you. Keep it an in upright position when you're on the move, or adjust it parallel with your belt when sitting. The holster features built-in indentations that run along the inside of the case to protect the trackball, and ensure your device is not accidentally activated. The holster also has a built-in proximity sensor, so it knows when your BlackBerry device is in place - and it automatically shuts off the screen in order to help maximize battery life. This technology also allows you to choose different notification settings for incoming calls, emails and other functions based on whether your device is in or out of the holster.