Wahoo's ANT+ Run/Gym Heart Rate Pack transforms your iPhone into an all-in-one training partner for running, riding, and going to the gym. Wahoo's Key and Heart Rate Strap enable real time viewing of heart rate and calorie burn.
• Connects your iPhone to ANT+ fitness sensors: heart rate (included), cycling speed/cadence sensors (sold separately), and power meters (sold separately)
• Tracks real-time heart rate zone information and accurate calorie burn data
• Adjustable heart rate strap fits up to 48” chest
• Long-lasting, replaceable coin cell battery; no need for extra cables or recharging
• Weight: Key: 3.5 grams, Heart Rate Strap: 45 grams