4iiii Viiiiva HRM ANT+ to BT Bridge Heart Rate Monitor
1/ 5
Anna 14 February, 2024

Nice belt but poor data quality (dropouts and spikes)

Unfortunately there were data errors in 5 out of the first 6 workouts I tried (either HR dropouts or HR spikes), despite following the instructions carefully, and once it had failed the first time, I tried: super-wetting the band, using electrode glue, rotating the box partway to the side, changing tshirt, changing sportsbra, and any other tricks I've learned that may apparently help to eliminate such things. Sadly I won't be using this product again.

Pros
  • Front clipping belt
  • Low profile box
  • Narrow band
Cons
  • Dropouts in the HR data
  • Spikes in the HR data
4iiii Viiiiva HRM ANT+ to BT Bridge Heart Rate Monitor
1/ 5
Anna 14 February, 2024

Nice belt but poor data quality (dropouts and spikes)

Unfortunately there were data errors in 5 out of the first 6 workouts I tried (either HR dropouts or HR spikes), despite following the instructions carefully, and once it had failed the first time, I tried: super-wetting the band, using electrode glue, rotating the box partway to the side, changing tshirt, changing sportsbra, and any other tricks I've learned that may apparently help to eliminate such things. Sadly I won't be using this product again.

Pros
  • Front clipping belt
  • Low profile box
  • Narrow band
Cons
  • Dropouts in the HR data
  • Spikes in the HR data
4iiii Viiiiva HRM ANT+ to BT Bridge Heart Rate Monitor
1/ 5
Anna 14 February, 2024

Nice belt but poor data quality (dropouts and spikes)

Unfortunately there were data errors in 5 out of the first 6 workouts I tried (either HR dropouts or HR spikes), despite following the instructions carefully, and once it had failed the first time, I tried: super-wetting the band, using electrode glue, rotating the box partway to the side, changing tshirt, changing sportsbra, and any other tricks I've learned that may apparently help to eliminate such things. Sadly I won't be using this product again.

Pros
  • Front clipping belt
  • Low profile box
  • Narrow band
Cons
  • Dropouts in the HR data
  • Spikes in the HR data