More than just a heart rate monitor
Viiiiva's innovative design captures the most sensitive of heart rates! Its advances beat-to-beat measurement gives immediate heart rate representation allowing for quick performance adjustments. And, Viiiiva bridges ANT+ sensor data to both iOS and Android smartphones.
Tap to Pair
A simple tap of your smartphone to your Viiiiva pod gives you instant pairing for immediate connection between devices each time you activate your Viiiiva.
Now you can save your data right on your Viiiiva and transfer it later for viewing and analysis. This ‘file save’ capability stores up to 65 hours of your ANT+ sensor data so you can transfer saved logs to the 4iiii app and onto your favourite software. Of course, you can also see your data in real-time if you have your Sportiiii, smartphone, smart watch, bike head unit or any other compatible display with you.
Highly Responsive Heart Rate Sensing and Superior Beat-to-Beat Measurement
Viiiiva is ten times more accurate than most other sport heart rate monitor options so it can capture the most sensitive of heart rates. Its advanced beat-to-beat measurement also gives an immediate representation of your heart rate, allowing you to quickly adjust your performance. It also makes it an ideal tool for measuring heart rate variability (HRV) and your level of activity readiness.
ANT+ Sensor Bridge
Viiiiva collects data from your other ANT+ sensors and then transfers it via Bluetooth to your iOS or Android smartphone. This unique bridging function captures foot speed, bike speed, bike cadence, bike power and calorie count for real-time or stored data viewing.
Fitness Equipment Pairing
Keep track of your progress in the gym! Viiiiva works with ANT+ enabled cardio equipment to give you real-time and logged data. Look for the “LINK HERE” logo on your equipment console to pair your Viiiiva.
Viiiiva’s seamless connection to Sportiiiii and ANT+ and Bluetooth compatible displays (watches, bike computers, etc.) lets you work with your choice of top devices from leading global brands.
Long Battery Life
Viiiiva comes equipped with a coin cell battery that will give you up to 200 hours of usage. No daily charging required.
4iiii Product Integration
Viiiiva collects, logs and transfers data from 4iiii sensors including the new PRECISION power meter. It also sends your heart rate data to the 4iiii Sportiiii heads-up performance coach that gives visual and audio coaching cues, allowing you to stay motivated and in your zone.
iOS: This product is designed for use on the iPhone 4s and newer, iPad 3rd gen and newer, iPad mini, iPad Air, and iPod 5th gen.
Android: This product is designed for use with Android devices compliant with the Bluetooth 4.0 protocol running Android version 4.3 or newer and must allow third-party App access to the Bluetooth 4.0 (Smart) Radio.
User-friendly 4iiii app
View your activity in real-time, upgrade to our latest product features and access the 4iiii web store with the 4iiii app. It’s compatible with both iOS and Android and is your gateway to emailing your stored activity logs to your favourite third-party training app or site.
4iiii Cliiiimb app updated for compatibility
With our recent upgrade, it’s now possible for you to wear your Viiiiva heart rate monitor and to pair it with the Sportiiii heads-up display tool to gain real-time, LED and audio feedback on a wide range of training metrics such as your heart rate, speed, cadence and power output when used with the PRECISION power meter.
If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.
Please remember to add postal time (2-3 working days) to obtain a complete estimate of delivery to your door.
You will receive an email to confirm when your item has been sent.
You can also check the status of your order and individual items by accessing My Account details and following the prompts.
Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.
It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.
Please see our returns policy.
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