Table 1: 500-score quality rating system, overall rating system divided in three main categories: hardware, software, and measurements.

Main category Subcategory Item Scores Hardware Instruction manual understandability 10 Packing Quality 10 Handling 15 Chest belt Storage 10 Battery 10 Quality 20 Wearing comfort 25 Receiver Power consumption 5 Quality 25 Handling 15 Connectivity 5 Subtotal 150 Installation 10 Software Menue navigation 40 Features 100 Subtotal 150 ECG deviation 30 Measurements Distance 70 Failure quota in field test 100 Subtotal 200 Maximum overall score 500