Gadgetbridge/app/src/main/res/drawable/ic_tws_case.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="45sp"
    android:height="45sp"
    android:viewportWidth="25"
    android:viewportHeight="25"
    android:tint="#7E7E7E">
  <path
      android:pathData="M8.1975,3L16.8025,3A5.7287,5.7287 0,0 1,22.5312 8.7287L22.5312,16.2713A5.7287,5.7287 0,0 1,16.8025 22L8.1975,22A5.7287,5.7287 0,0 1,2.4688 16.2713L2.4688,8.7287A5.7287,5.7287 0,0 1,8.1975 3z"
      android:strokeWidth="2"
      android:strokeColor="#000000"/>
  <path
      android:pathData="M2.4138,8.6137L22.5862,8.6137"
      android:strokeWidth="2"
      android:strokeColor="#000000"/>
</vector>