4iiii Viiiiva Dual Heart Rate Monitor w/ iPhone Connectivity Review

The Viiiiva 4iiii HR monitor is a really cool concept. It connects via Bluetooth with your iPhone to send HR data from the strap itself, but also collects data via ant+ and sends data to iPhone from your Garmin footpod, cadence sensor, or Garmin power meter as well. I was hoping that for $80 it would overcome … Continue reading 4iiii Viiiiva Dual Heart Rate Monitor w/ iPhone Connectivity Review