The Nike/Philips MP3RUN MP3 player and workout computer. €349.99.

‘Runners strap the MP3RUN to their arm and the wireless, Bluetooth-enabled speed sensor to their shoe and they’re ready to go. The sensor continuously collects information such as tracking speed and distance with up to 99.6% accuracy, which can be on demand accessed via the audible feedback. When finished running, the display shows a summary of the performance and gives an audible summary on the pace, distance and time via the headphones.’