MPERO Collection Full Coverage Paint Splatter Black Case for Nokia Lumia 521 Specially designed Full Coverage Paint Splatter Black Case for Nokia Lumia 521. Custom paint splatter pattern provides a colorful looking appearance with a smooth glossy finish. Precisely engineered two-piece snap-on design ensures outstanding protection for your Nokia Lumia 521. Made of the highest quality mould material for maximum protection and durability. MPERO is a protected trademark.