POLAR
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Polar T31 Coded Chest Transmitter and Elastic Strap
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Polar T31 Coded Chest Transmitter and Elastic Strap
Transmits heart rate data to Polar heart rate monitors using 5kHz transmission and compatible gym equipment.
Polar T31 Coded Chest Transmitter and Elastic Strap
Item #: 387291

Polar T31 Coded Chest Transmitter and Elastic Strap

Item #: 387291
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Transmits heart rate data to Polar heart rate monitors using 5kHz transmission and compatible gym equipment.
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What Stands Out

Coded Signal
The T31 features coded transmission to eliminate interference from other devices, ensuring accurate heart rate data during workouts, providing a reliable and efficient training experience for fitness enthusiasts.
Comfortable Strap
Designed with an elastic strap, the T31 offers comfort and flexibility, allowing users to focus on their workout without distractions, making it ideal for long exercise sessions.
Compatibility
Compatible with various Polar devices, the T31 enhances your workout experience, allowing seamless integration and data sharing, empowering users to track their performance effectively.

Product Details

Shop for the Polar T31 Coded Transmitter in Black at the Ubuy Mongolia Global Store. Slim, lightweight, and water-resistant, this transmitter accurately transmits your heart rate data to your Polar wrist-top computer. Compatible with FT1, FT2, FT4, FT7, FT40, FT60, FT80, RS100, RS300X, RS400, RCX5.
  • Transmits heart rate data to Polar heart rate monitors and compatible gym equipment using 5kHz transmission
  • Compatible with Polar heart rate monitors such as FT1, FT2, FT4, FT7, FT40, FT60, FT80, RS100, RS300X, RS400, RCX5
  • Individually coded to avoid cross-talk with other electronic devices
  • Slim, lightweight, and waterproof design
  • Fits chest sizes from 25 to 54 inches
  • Average battery lifetime of 2500 hours (non user replaceable)

Who Should Buy?

Suitable For
  • Fitness Enthusiasts

    Ideal for regular gym-goers who track heart rate for effective workouts and improved performance.

  • Athletes

    Perfect for competitive athletes requiring accurate heart rate data during training sessions and competitions.

  • Health Monitors

    Beneficial for individuals monitoring their heart health, helping them stay within safe exercise thresholds.

Not Suitable For
  • Casual Users

    Not suitable for those who only occasionally exercise and do not need detailed heart rate tracking.

Product Description

Polar T31 Coded Chest Transmitter and Elastic Strap

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Customer Questions & Answers

  • Question: What is the Polar T31 Coded Chest Transmitter and Elastic Strap used for?

    Answer: The Polar T31 Coded Chest Transmitter is primarily used for monitoring heart rate during workouts. It transmits a wireless signal to compatible Polar receivers, allowing users to track their heart rate in real-time. This is particularly useful for athletes and fitness enthusiasts who want to optimize their training sessions based on heart rate data.
  • Question: How does the Polar T31 Coded Chest Transmitter work?

    Answer: The Polar T31 uses a coded transmission system to send heart rate data from the chest strap to a compatible Polar device. It operates on a 5kHz frequency for reliable and interference-free communication. The elastic strap securely holds the transmitter in place, making it comfortable for extended wear during various physical activities.
  • Question: Is the Polar T31 compatible with all heart rate monitors?

    Answer: The Polar T31 is specifically designed to work optimally with Polar heart rate monitors and fitness devices. While it may be compatible with other brands, its primary functionality is ensured with Polar products. Always check the compatibility before purchasing to ensure you can fully utilize its features.
  • Question: Can I wash the elastic strap of the Polar T31?

    Answer: Yes, the elastic strap of the Polar T31 can be washed to maintain hygiene. It’s recommended to hand wash it with mild detergent and air dry. Regular cleaning helps prevent sweat buildup and skin irritation, ensuring a comfortable fit during workouts.
  • Question: What is the fit range of the Polar T31 chest strap?

    Answer: The Polar T31 chest strap is adjustable and designed to fit a range of body types. The elastic material allows for a snug yet comfortable fit, accommodating various chest sizes. This feature is essential for accurate readings during physical activities and ensures maximum comfort.
  • Question: How long does the battery last in the Polar T31 transmitter?

    Answer: The battery life of the Polar T31 transmitter can last up to several months, depending on usage. The efficient design minimizes power consumption while ensuring reliable performance. Regular checks are recommended to ensure consistent heart rate monitoring during workouts.
  • Question: What materials are used in the Polar T31 Coded Chest Transmitter?

    Answer: The Polar T31 features high-quality materials that ensure durability and comfort. The transmitter is made from a lightweight plastic, and the elastic strap is designed to be breathable and comfortable against the skin. This combination supports both wearability and longevity, making it ideal for regular use.
  • Question: Can the Polar T31 be used for swimming?

    Answer: The Polar T31 is not designed for underwater use and should be kept dry as it is splash-proof but not waterproof. For swimmers looking to monitor heart rate, consider Polar models specifically designed for aquatic environments. This distinction is crucial for accurate data tracking.
  • Question: What are the benefits of using the Polar T31 for training?

    Answer: Using the Polar T31 for training provides immediate feedback on your heart rate, helping you stay within your target zone. This feature is especially beneficial for optimizing performance and enhancing workout efficiency. Athletes can adjust their intensity based on real-time data, improving overall training outcomes.
  • Question: Where can I buy the Polar T31 Coded Chest Transmitter and Elastic Strap in Mongolia?

    Answer: You can purchase the Polar T31 Coded Chest Transmitter and Elastic Strap conveniently from Ubuy. They offer a streamlined shopping experience and a wide selection of Polar products to ensure you find what you need easily.

POLAR Electronics & Gadgets Editorial Review

The Polar T31 Coded Chest Transmitter and Elastic Strap is a great product for monitoring heart rate during workouts. It is easy to use and compatible with various treadmill and fitness equipment brands. The chest strap connects automatically using gymlink technology, eliminating the need for complicated setup. However, it may not be compatible with all smartphone apps and additional devices may be required. Overall, it is a reliable and effective heart rate monitoring solution.

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Pros

  • Easy to use
  • Compatible with multiple treadmill brands
  • Automatic pairing with gymlink technology
  • Reliable heart rate monitoring

Cons

  • May not be compatible with all smartphone apps

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“Easy to use and always helpful and sorts any issues I've had past and present”

1 September 2026 · via Trustpilot
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“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”

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“The delivery was fast and the product came undamaged and authentic.”

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Features & Benefits

  • Compatible with Polar heart rate monitors and gym equipment
  • Eliminates cross-talk with other electronic devices
  • Slim, lightweight, and waterproof design
  • Fits 25 to 54 inch chest size
  • Average battery lifetime is 2500 hours of use
  • Non user replaceable battery

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