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Polar T31 Coded Chest Transmitter and Elastic Strap Review

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By Best Choice team
Checked icon Last updated - March 17, 2026
8.7

Verdict overview

  • Simple to use 9.1
  • Precision 8.6
  • Battery Duration 8.4
  • Mobile App 8.1
  • Comfort 9.1
Pros
  • 1. Accurate: Compatible with Polar monitors and gym equipment.
  • 2. Compatible: Individually coded to avoid cross talk.
  • 3. Durable: Slim, waterproof, and long battery life.
Cons
  • Inaccurate readings possible.

Tech specs

item package dimensions l x w x h 12.13 x 3.78 x 1.14 inches
screen size 54 Inches
color Black
sport type Excercise & Fitness
item weight 0.01 Kilograms
number of items 1
included components Heart Rate Transmitter
battery life 2500 Hours
package weight 0.14 Kilograms
material Elasticized-Fabric
brand name POLAR
model year 2006
item dimensions lxwxh 0.04 x 0.04 x 0.04 inches
sensor type Wearable
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Product Overview

I recently had the opportunity to try out the POLAR T31 Coded Chest Transmitter and Elastic Strap. This product is designed to transmit heart rate data to Polar heart rate monitors, as well as compatible gym equipment. I found it to be an effective and reliable way to monitor my heart rate during workouts.

The transmitter itself is quite small and lightweight, making it easy to transport and use. The elastic strap is comfortable and adjustable, allowing it to fit chests between 25 54 inches in size. The coded transmission helps eliminate cross talk with other electronic devices in the same area so you don t have to worry about interference from other heart rate monitors or other devices.

The battery life of the POLAR T31 is quite impressive, offering up to 2500 hours of use between charges. While it does take some time for the battery to charge fully, once its ready you can expect a long period of uninterrupted use. The battery itself is non user replaceable, but that shouldn t be a problem provided you don t forget to keep your transmitter charged!

Overall, I found the POLAR T31 Coded Chest Transmitter and Elastic Strap to be an effective and reliable way of monitoring my heart rate during workouts. The small size makes it easy to carry around and transport, while the coded transmission eliminates cross talk with other devices in the area. The battery life offers up to 2500 hours of use between charges, which should be plenty for most people s needs. I would highly recommend this product for anyone looking for an accurate way of tracking their heart rate during workouts or activities!

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The secret behind our reviews

By Best Choice team

Best Choice Team is your go-to source for curated product recommendations across various categories. Leveraging years of industry experience and advanced AI technology, we analyze data from multiple sources to bring you the most relevant and up-to-date product lists.

Our AI-driven approach allows us to streamline the selection process, ensuring that the products we feature align with current market trends and consumer preferences. We aim to provide content that helps you navigate your purchasing decisions with greater ease.

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87% of reviewers would recommend to a friend, Based on 5,066 Reviews

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