The Runtastic Bike Case, in combination with the Runtastic Road Bike or Runtastic Mountain Bike app, transforms your smartphone into a professional bike computer. The bike case is splash-proof, shock-resistant, and protects your smartphone from damage. It features openings at the top and bottom for connecting headphones or a power bank. The operation of your smartphone works perfectly through the display protection, allowing your device to remain securely in the Runtastic Bike Case throughout your entire ride. With the included foam strips, you can customize the Runtastic Bike Case to fit your smartphone.