Use the CK31 holster & belt to conveniently carry the CK31 Handheld Computer when you are not using it. You can configure the holster to be worn on either side of your body. The holster can hold a CK31 with a handle or a serial adapter installed. If you do not have a handle attached to your CK31, you can insert it into the holster without having to move the position of the holster. If your CK31 has a handle, you may want to configure the holster to more conveniently carry the CK31. This product is designed for CK31 models with large back (laser scanners).