4iiii Viiiiva Heart Rate Monitor

4iiii Viiiiva Heart Rate Monitor

Viiiiva is so much more than your standard Heart Rate Monitor. While storing 65 hours of workout data, Viiiiva also acts as an ANT+ to Bluetooth bridge.

You can broadcast your ANT+ devices to your bluetooth devices all through your Heart Rate Monitor – perfect for foot pods and Zwifting on Apple TV.

It’s Easy

Tap-to-pair connection lets you simply tap your iOS or Android smartphone to your Viiiiva pod to immediately connect the devices.
Display compatibility gives you the freedom to use your choice of ANT+ and Bluetooth compatible displays with Viiiiva.
The 4iiii app enables you to see your activity in real time, access upgrades through our web store, and transmit your activity data to other training apps or websites.

It’s Advanced

Activity logging means you can not only view your data in real time, but you can also save up to 65 hours of data on Viiiiva and transfer it to another device or application.
ANT+ sensor bridge lets Viiiiva collect data from other ANT+ sensors, then transfer it via Bluetooth to your iOS or Android smartphone.
Fitness equipment pairing enables you to pair Viiiiva with cardio equipment in the gym for real-time and logged data.


Measurement Type


Operating Temperature

0 to 50°C (32-122°F)

Storage Temperature

-20 to 60°C (4-140°F)

Battery Type

CR2032 lithium ion coin cell

Battery Life


Waterproof Rating


Radio Frequency



57 to 132cm (23-52in)


65mm (2.6in)


37.4mm (1.5in)


11.2mm (0.4in)

Module Weight

Pod: 14g (0.5oz), Strap: 33g (1.2oz), Total: 47g (1.7oz)

Communication Protocols

ANT+, Bluetooth®

Activity save duration

Up to 60hr

R-R Interval Unit

1/1024 sec


4iiii Innovations Inc.
141 2 Ave E
Cochrane, Alberta Canada
T4C 2B9
Phone: +1.403.800.3095

Sales: [email protected]

Support: 4iiii.zendesk.com

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