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4iiii Viiiiva Heart Rate Monitor
Usually dispatched within 24 hours
Average connection time 25 secs
Trusted by pros and enthusiasts alike, Viiiiva is 10x more sensitive than most heart rate monitors, 5x more responsive, uses advanced beat-to-beat measurement, and can store up to 65 hours of data. The sensor also collects and transfers data from your other ANT+ products via Bluetooth to your iOS or Android device.
Viiiiva is comfortable and easy to wear, featuring a soft, flexible strap for a perfect fit.
- Advanced, beat-to-beat measurement makes Viiiiva ten times more sensitive than most heart rate monitors to capture the most sensitive of heart rates, measure heart rate variability, and gauge your level of activity readiness
- 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
- Tap-to-pair connection lets you simply tap your iOS or Android smartphone to your Viiiiva pod to immediately connect the devices
- Fitness equipment pairing enables you to pair Viiiiva with cardio equipment in the gym for real-time and logged data
- Display compatibility gives you the freedom to use your choice of ANT+ and Bluetooth compatible displays with Viiiiva
- 4iiii product integration means you can use Viiiiva with PRECISION and Sportiiii coaching tools to give you a full range of training data
- User-friendly app from 4iiii 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
- Long battery life Viiiiva comes with a replaceable coin cell battery that gives you up to 200 hours of usage
- Weight: 5 g (1.76 oz)
- Dimensions: 6.5 cm x 4.5 cm (2.55 in. x 1.77 in.)
- Strap length: 57–132 cm (23–52 in.)
- Battery type: CR 2032
- Battery life (hours of use): up to 200 hours
- Operating temperature: 0–50 C (32–122 F)
- Waterproof rating: IP 67
- Radio frequency: 2.4 GHz
- Communications Protocols: ANT+, Bluetooth Smart
Delivery & Returns
How long will it take to arrive?
Please check the stock availability notice on your item when placing your order. This item is: In stock.
Express Delivery Available 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.
How will I know it has been sent
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 your account details and following the prompts.
Please allow 10 working days from the shipping date of your order before notifying us of any late deliveries.
It may be advisable to check with your neighbors to see if your delivery has been left with them, check any places it could be left such as: garage, porch, or behind garbage cans if it was too big to fit through your mailbox. Contact your local post office to see if the item has been returned to the depot as undelivered and awaiting collection.
If I'm not completely happy with my item?
Please see our returns policy.
Top Customer Reviews
Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.
Only heart rate monitor you will need
This is a fantastic device. Now with the 4iiii Viiiiva I can use the one heart rate monitor for all my needs. All my ANT+ sensors are now easily available to my iOS devices. Makes using Zwift iOS and my other training apps on my phone easy. It is well made and I like the strap too. Very happy with my purchase and the support staff at ProBikeKit we helpful prepurchase. Highly recommended.