POLAR Heart Rate Sensor H1 Watch Compatible Bluetooth Smart Monitor, New Battery | eBay
Amazon.com: TUDIA EVA Empty Case for Heart Rate Monitor with Chest Strap Compatible with Polar H10 [Case ONLY, Device NOT Included] : Sports & Outdoors
Polar H10 Heart Rate Monitor Chest Sensor and Soft Strap (and some comparisons to the H9 and Scosche RHYTHM+) - Review - Random Bits & Bytes Blog
3. TRAINING
POLAR H2/H3 HEART RATE SENSOR
Polar H7 Bluetooth Heart Rate Transmitter w/ HRM USA Strap