Made from premium lambskin leather, this elegant holster features a built-in proximity sensor that will automatically shut off the screen of your BlackBerry Curve 8900 in order to preserve and 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. A sturdy swivel belt clip is located on the back of the holster so you can easily adjust it for maximum comfort. Either keep it upright when your on the go or adjust it to the parallel position when sitting. Running along of the inside of the case are built-in indentations to protect the trackball, and to ensure your device is not activated accidentally. This luxurious leather holster is perfect for the business person that is always on the go.