The PLAYR is a professional GPS tracking system that you use during exercise to make your performance transparent. You attach the small device to a sports vest, after which you can see exactly in the PLAYR app where, how hard and how much you ran per game period. You can see this all on your phone in charts and heatmaps. The device measures up to 100 centimeters accurately and has 4 GB of memory. The PLAYR is light-weight and can be recharged wirelessly so that you can use it again during the next training session. The device is moisture-resistant, so it is not a problem if you perspire a lot during your efforts.