Amzer Pudding Soft Gel TPU Skin Fit Case Cover for Nokia Lumia 830 - Retail Packaging - Black The matte finish promotes grip ability and minimizes sliding on flat surfaces. Provides excellent protection for your Nokia Lumia 830. Precisely engineered includes custom cut-outs to fit your Nokia Lumia 830 perfectly. Plug your charger, cable or headset without removing the case. Easy installation, just snap on your device without any tools, also very easy to take off, no tools needed.