---
product_id: 64351928
title: "Polar T31 Transmitter"
brand: "polar"
price: "€ 80.63"
currency: EUR
in_stock: false
reviews_count: 8
category: "Sports"
url: https://www.desertcart.sk/products/64351928-polar-t31-transmitter
store_origin: SK
region: Slovakia
---

# Polar T31 Transmitter

**Brand:** polar
**Price:** € 80.63
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Polar T31 Transmitter by polar
- **How much does it cost?** € 80.63 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/64351928-polar-t31-transmitter)

## Best For

- polar enthusiasts

## Why This Product

- Trusted polar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Product Description
        	
        	
        		
        			The Polar T31 transmitter is slim and light transmitter that is fully water resistant and designed for all weather conditions. Its purpose is to transmit your heart rate to your wrist unit accurately, without cross talk.
				    	
					
        		
        		
        	
        
        	
        		Box Contains
        	
        	
        		
        			T31 transmitter Fabric elastic strap

## Features

- Transmits heart rate data to Polar monitors using 5kHz transmission and compatible gym equipment. Compatible heart rate monitors include, but are not limited to: FT1, FT2, FT4, FT7, FT40, FT60, FT80, RS100, RS300X, RS400, RCX5
- Individually coded to pick up your heart rate monitor and not others nearby. This eliminates cross-talk with other electronic devices in the same area.
- Slim, lightweight, and waterproof design
- Fits 25 to 54 inch chest size
- Average battery lifetime is 2500 hours of use. Non user replaceable battery

## Images

![Polar T31 Transmitter - Image 1](https://images-na.ssl-images-amazon.com/images/I/611U0WXy8lL._AC_UL160_SR160,160_.jpg)

## Available Options

This product comes in different **Style Name** options.

## Customer Reviews

### ⭐⭐⭐ Works with my F4 Polar Watch BUT !
            
*by J***R on 7 March 2019*

The positive thing that it worked with my F4 Polar Watch, straight out of the box.However the negative aspect is also, that it worked with my F4 Polar Watch straight out of the box.Without the need to remove a Battery isolation strip or any other means of switching it on/off and therefore I've no idea how old the Battery is or how long it's been in use.It's clear changing the battery isn't a DIY job and trying to get a price from Polar for changing it, is akin to banging ones head against a wall, so I'll be move to a different monitoring kit when the battery fails.
  

### ⭐⭐⭐⭐⭐ It makes it easy to keep a steady pace that keeps me in ...
            
*by G***A on 24 May 2017*

We cannot go to the gym without our Polar Heart monitors. These work well with most electronic exercise equipment. I watch my heart rate instead of the machine intensity. It makes it easy to keep a steady pace that keeps me in my personal heart rate zone that is good for me. It gives a constant reading without having to grab the heart monitor handles. Washable. I had my first one for about 15 years. I would still be using it, but I accidentally left it somewhere. I replaced it with exactly the same monitor. Great product with a great price. So worth it!!!!!!
  

### ⭐ Didn't work with Lifefitness Treadmill
            
*by S***S on 23 June 2019*

I had one of these previously used with a Lifefitness bike but recently swapped that for their treadmill. Despite syncing up properly, it was always very slow to connect and didn't start to read heart rate until 5-10 mins into exercise (pads were moist and positioned correctly). Then when a heart rate was detected, it always showed incorrectly, either around 200bpm or 65bpm despite my fitbit measuring approx. 140bpm at the same time. Not reliable at all, sent back for refund.
  

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**Shop now:** [https://www.desertcart.sk/products/64351928-polar-t31-transmitter](https://www.desertcart.sk/products/64351928-polar-t31-transmitter)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-07*