Lumia 640 Case, CoverON [Aurora Series] for Microsoft Lumia 640 Diamond Rhinestone Bling Heavy Duty Hard Hybrid Tough Phone Cover - Teal & Black CoverON [Aurora Series] diamond bling hybrid case for the Microsoft Lumia 640 Soft flexible silicone inner cover and a rigid plastic outer layer Embedded diamond bling design to personalize the look of your Lumia 640 Premium dual layer armor for full body phone protection 90 day manufacturer warranty