How do you change the battery?

Although the unit is designed NOT to have the battery replaced, it can be done. It takes a CR2032 coin type battery.I followed this video and successfully replaced mine in under ten minutes.https://youtu.be/lBsv9XoV6aA

Is it compatible with a life fitness treadmill? If so how can it be connected?

Yes it is compatible, actually I purchased for same treadmill brand . It is conected automatically by gymlink so no setup is required. Great product .

how do you pair this t31 with compatible treadmill machines with polar sign on it?

Pairing is automatic. Just start your workout and it will sync with a little sweat

Does the t31 work with the iphone 5? I've tried without success using both MapMyRide and the Polar App. Cheers M

The problem is that you need the device to be capable of acquiring data from the transmiter in it's own frequency and I do not think that the iphone is able to do that without a special additional device. For example you have a app called sports tracker that has its own heart rate monitor, I do not know how it works gut there must be some way to catch the information from the heart rate monitor to the phone. For what I know is very probable that you should need some additional device to get the heart rate monitor frequency.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Polar T31 Coded Chest Transmitter and Elastic Strap

Polar T31 Coded Chest Transmitter and Elastic Strap

Product ID: 1259687

Details

Battery Description
Lithium-Ion
Battery Life
2500 hours
Brand
POLAR
Color
Black
Compatible Devices
Polar FT2
Item Weight
0.09 kg

⏳2500 hours battery life

💧water-resistant design

📡5kHz coded transmission

COP 340072

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Description

💪 Stay ahead of the pack with precision that never quits!

SLEEK WATERPROOF - Slim, lightweight, and water-resistant for seamless wear in any workout.
ENDURANCE READY BATTERY - Up to 2500 hours of uninterrupted training power—no mid-season surprises.
UNIVERSAL COMPATIBILITY - Works flawlessly with a wide range of Polar monitors and gym equipment.
COMFORT FIT ELASTIC STRAP - Adjustable 25-54 inch strap ensures a snug, secure fit for every athlete.
PRECISION HEART RATE TRACKING - Coded 5kHz signal eliminates cross-talk for ultra-accurate data.

The Polar T31 Coded Chest Transmitter and Elastic Strap delivers highly accurate heart rate data via a coded 5kHz transmission that prevents interference from nearby devices. Designed for durability and comfort, it features a slim, lightweight, and water-resistant build with an adjustable elastic strap fitting chest sizes 25 to 54 inches. Compatible with a broad range of Polar heart rate monitors, it offers up to 2500 hours of battery life, making it a reliable companion for serious fitness enthusiasts and professionals alike.

Specifications

ASIN	B000ARDPPU
Battery Average Life	2500 hours
Best Sellers Rank	#76,394 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #479 in Electronics & Gadgets
Brand	POLAR
Brand Name	POLAR
Color	Black
Compatible Devices	Polar FT2
Customer Reviews	4.2 out of 5 stars 2,892 Reviews
Display Size	54 inches
EU Spare Part Availability Duration	1 years
Global Trade Identification Number	00725882017594, 00725882201351
Included Components	Heart Rate Transmitter
Item Dimensions L x W x H	0.04"L x 0.04"W x 0.04"H
Item Type Name	Coded Heart Rate Transmitter and Belt Set
Item Weight	0.09 kg
Manufacturer	Polar
Manufacturer Part Number	92053125
Material	Elasticized-Fabric
Material Type	Elasticized-Fabric
Model Number	92053125
Number of Items	1
Number of Packs	1
Product Dimensions	0.04"L x 0.04"W x 0.04"H
Screen Size	54 inches
Sensor Type	ECG
Size	54"
Team Name	Polar
UPC	725882017594
Unit Count	1 Count
Warranty Description	2 year manufacturer

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

COP 340072

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews