GolfBuddy - PT4 Golf GPS Navigator Universal Portable Travel Case NuVur w/Carabiner Hook [Black Nylon Hard Cover] Internal dimensions (approximate): 5.75 x 3.25 x 1 inches Carbon Shell| Ideal for the adventurer with clumsy hands 1 X Detachable Hook| Use with your backpack, handbag, or attach keys Protects your device from minor bumps, dirt, and moisture Internal mesh compartment ideal for small accessories