4iiii Viiiiva Dual Heart Rate Monitor With iPhone Connectivity

The 4iii Viiiiva is 10 times more sensitive than most heart rate monitors, is 5 times more responsive, uses advanced beat-to-beat measurement and can store up to 65 hours of data. In addition this sensor also collects and transfers data from your other ANT+ watch or computer such as Garmin, adidas and Timex via Bluetooth to your iOS or Android device. The Viiiiva is trusted by pros and enthusiasts alike and features a soft, flexible strap for a perfect fit making it comfortable and easy to wear.

Advanced beat-to-beat measurement: Captures the most sensitive of heart rates, measures heart rate variability and gauges your level of activity readiness
Activity logging: View your data in real time, save up to 65 hours of data on Viiiiva and transfer it to another device or application
ANT+ sensor bridge: Collects data from ANT+ watch or computer then transfers it via Bluetooth to your iOS or Android smartphone
Tap-to-pair connection: Simply tap your iOS or Android smartphone to your Viiiiva pod to immediately connect
Fitness equipment pairing: Pair Viiiiva with cardio equipment in the gym for real-time and logged data
Display compatibility: Freedom to use your choice of ANT+ and Bluetooth compatible displays with Viiiiva
4iiii product integration: Use Viiiiva with PRECISION and Sportiiii coaching tools for a full range of training data
User-friendly 4iiii app: See your activity in real time, access upgrades through 4iiii's web store, transmit your activity data to other training apps or websites
Long battery life: Comes with a replaceable coin cell battery for up to 200 hours use