Review: UPDATED: TomTom Multi-Sport Cardio

Introduction, Screen, Battery and DesignAs impressed as we were with the TomTom Runner and Multi-Sport, it was obvious at the time that there was plenty of room for improvement.A year later and TomTom is refreshing its watches with the new "Cardio" versions, which bring all the familiar features of the first two but with one big added extra - a built-in heart rate monitor.Not just that, but (so far) a highly accurate one. The original Runner and Multi-Sport could be paired with a separat