4iiii's Viiiiva heart rate monitor works wirelessly with the iPhone - The Verge
4iiii Viiiiva Heart Rate Monitor | Halfords UK
4iiii Innovations Inc. on Instagram: "When it comes to tracking heartbeats, nothing beats the Viiiiva heart rate monitor. With its 65-hour internal memory, ANT+ to Bluetooth bridging feature and universal equipment pairing
4iiii Viiiiva Heart Rate Monitor Review | Coach
Viiiiva Heart Rate Monitor – 4iiii Shop - UK
4iiii Viiiiva Ant+ Bluetooth and Bridge to Zwift - YouTube
4iiii Viiiiva Heart Rate Monitor and ANT+ to BT Bridge - cycling-review.net