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Kalenji DUAL ANT+ Smart Runner's Bluetooth Heart Rate Monitor Belt

Sale price: $25.00 Regular price: $44.99

Your heart rate on your smartphone and/or GPS watch.

Color: Select a color
Size: Select a size
Sale price: $25.00 Regular price: $44.99

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8334795

Product Features

A photo of the Kalenji DUAL ANT+ Smart Runner's Bluetooth Heart Rate Monitor Belt in use

Kalenji DUAL ANT+ Smart Runner's Bluetooth Heart Rate Monitor Belt | We designed this belt for visualizing your heart rate on your compatible smartphone or GPS watch.

Your heart rate on your smartphone and/or GPS watch.

Measurement settings

Heart rate monitor. Sends to your ANT+/Bluetooth smart device.


1 ATM (Water projection)

User comfort

Fabric belt for more comfort.


Compatible with Bluetooth Smart (4.0) and ANT+ devices.

Product Customer Reviews

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4741 Reviews
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Kalenji DUAL ANT+ Smart Runner's Bluetooth Heart Rate Monitor Belt,black
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Just as good as more expensive models

Bought as a replacement for a wahoo HRM. Good purchase

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Good budget priced HR monitor

Easy to synch with my phone or GPS watch. Highly recommend also using a gel to get proper contact with the monitor.

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Perfect HRM

Bought to replace a garmin, just as accurate as the garmin, battery runs out if you dont unclip the unit from the belt which you dont have to do on the garmin. Not really a problem as i just unclip one side, totally unclipping the unit from the belt resulted in me heading out the door with just the belt on a few times.

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Hello Moses

Thank you for your feedback :)

Australia is a retailer that only sells its own 'Passion Brands' - these are brands that are developed in-house. (We conceive, develop, manufacture & retail). This allows us to provide the highest quality possible for our customers and our trademark low and prices.

Your opinion is important to us as we continuously strive for our customers` full satisfaction.

We will be very happy to have you back shopping with us.

Stay safe and take care!

Daniel Khoury

Fitness / Footwear Commercial Director & Buyer

No response to query about replacement belt

The product is good and works as described, connected easily with my smart bike apps. However, my query about purchasing a replacement belt remains unanswered for many weeks now. The product is not listed on the online portal. Unless a replacement belt is offered , I can't recommend this product.

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Fit for purpose

Wanted the Blue tooth connectivity for use with my Smart Trainer setup. Connected straight away and faultless operation in the first 2 weeks. Comfortable to wear.

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Kalenji HRM belt

Syncs perfectly with FulGaz. Comfortable to wear and easy to clean.

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Great product

Works as advertised. Connects easily to my phone and my cycling computer

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Hr monitor and garmin 520 plus

Bought to replace my garmin hr monitor. Syncs to my garmin edge 520 plus and works perfectly. Cost heaps less than a garmin one. Very happy.

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Paired with Garmin Fenix no prob

Broke my Garmin strap bought this as a replace. Works great with Garmin watch with Ant+

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Hello Michael,

thank you for leaving a review with great information. We are glad to hear that you are happy with your purchase.

Have a great day,

Decathlon Calgary Team

So einige Problem damit

Als erstes es lässt sich nicht mit den Hauseigenen Domyos Bike 900 verbinden. Zum anderen entlädt sich die Batterie innert Stunden! Dieses Produkt wurde mir ausdrücklich für Domyos Indoor Bike 900 empfohlen und verkauft. Kann es daher nicht weiter empfehlen.

Needed a HRM

Great price, dual band cant go wrong, value for money.

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Poor longevity

Had this heart rate monitor appropriately 6 months and it no longer works as it should. Reads extremely low. Tried changing batteries etc. but to no avail. Best to stick with the more popular brands and spend that little bit more.

Absolute rubbish and previously used

I purchased yesterday as a brand new item. Upon opening, it was apparent that the battery compartment cover was knawed and battery was missing - obviously a previous return. No instructions on pairing but I eventually figured it out with Strava. The heart rate reading starts with 70 and then shoots to 239+ consistently which is clearly wrong. A poor product and Decathlon shouldn't be selling used, returned goods as brand new. I will be returning this immediately.

Good heart rate strap wrong battery

I've been using my first strap for twelve months which makes it as reliable as my previous Garmin strap (which failed after 18months). I've just brought another for my son but this didn't work. When I checked it had a CR2012 battery rather than a CR2032 battery. I've swapped it for the right battery but putting the wrong battery, which isn't up to the job, in a new product is rubbish (I've checked my strap which came with the right battery).

Hello Richard,

Thank you for your comments about our Dual HR BELT.

I'm sorry that you found a CR2012 in your product, this never happened before. I will make sure this was not start again on our production line.

Please don't hesitate to bring back your belt to the store so they can give you another new one.

If this one is broken we'll make it repair before putting in back to store in second-hand products.

Thank you

Kimberley, Ingénieur Produit

All good

so far so good connected to Garmin Edge and Fenix 5 with no problems

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Additional Product Information



  • 100% Nylon
  • 10% Pcba
  • 10% Copper


  • 100% Polycarbonate - Acrylonitrile butadiene styrene
  • 10% Pcba
  • 80% Printed circuit board

[EN] Electronic circuit

  • 10% Copper
  • 10% Pcba
  • 80% Printed circuit board

Track data

The Dual belt uses Bluetooth Smart (4.0) and ANT+ communication technology to send your heart rate.


A textile belt for more comfort.

Compatibility smartphone bluetooth smart

iOS : iPhone 4S and more recent Android : Download the Decathlon utility application to check if your phone is compatible

Compatibility smartphone sports applications

[The Dual Geonaute belt can be used with all compatible Bluetooth Smart sports applications. Use the Bluetooth Smart application to check that your phone is compatible with the technology.] iOS : Decathlon Coach | Runkeeper | Runtastic Pro | Endomondo | Strava Android 4.3 mini: Decathlon Coach | Endomondo | Runtastic Pro

Compatibility gps bluetooth smart (4.0) watches

Compatible with GPS watches using Bluetooth Smart (4.0) technology: Geonaute ONmove 200, ONmove 220, Polar M400, Polar V800, TomTom Runner

Ant+ compatibility

List of ANT+ compatible products: compatibilité ANT+


CR2032 included

Instructions for use with a smartphone

1/ Moisten the belt sensors 2/ Place the belt against your chest 3/ Activate the Bluetooth on your smartphone 4/ Start the selected sports application on your smartphone and pair the belt in the application settings. NOTE: The belt is not displayed as a Bluetooth device in your phone. It must be paired from the application.

Use restrictions

This watch is designed for sport and leisure. It's not a medical device. The information provided by the watch is for information purposes only and must not be used to track a pathology.



Care instructions

The belt is machine-washable (without the sensor).

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual