SIGMA Sportcomputer iD.Run HR features: - GPS track recording for speed and distance< br> - distance display - lap counter - monthly training statistics - personal best - activity tracking (can be switched off) - measurement of current/average/maximum heart rate at wrist - average/maximum heart rate per lap - quick access to current heart rate - intensity zones . /average/max heart rate at wrist - average/max heart rate per lap - access to current heart rate - intensity zonesFeatures: - backlit display - silicone strap - mineral glass - rechargeable battery.