Turtlebackcase A-SONIM5520HDL HD Leather Case for SONIM/XP/5520/BOLT - Non-Retail Packaging - Black Protective And It Looks And Feels Great Its Made With Genuine Leather And Is Equipped With A Heavy Duty Metal Clip For Ultimate Du This Sonim Xp 5520 Bolt Turtleback Heavy Duty Leather Case Is Rock Solid, Durable. Perfect for your tough every day needs