One of the smallest Bluetooth Smart-compatible heart rate sensors around, it works with Suunto’s Movescount App (free), or the Ambit3 line of GPS, ABC, HRM sport watches. The Smart Sensor communicates with your Ambit3 or smartphone, stores heart rate data when you're swimming or underwater, and forwards it to your device once you're on land. Saved workouts can be analyzed and shared via the Movescount app or web service.
- Records heart rate for swimming and watersports.
- Water resistant to 30m.
- User replaceable battery CR2025.
- Upgradeable software.
- Adjustable strap 64 to 94cm.
- Strap width 30mm.
- Includes a chest strap that works with MoveSense apparel (available separately).