I purchased this case to store my TOMTOM One Ver 3 in. The DC and Data cables are stored in one half, and the device in it's own formed packaging in the other. The protective cover over the device protects the screen from damaged by the cable terminals. The case is quite large 120mm high, 155mm wide, 70mm deep, but is robust enough to store it under the passenger seat. The only draw back is that there is no room to store the windscreen mount, but the shape of it make it difficult to store in any sort of case.