Garmin HRM Swim Heart Rate Transmitter and Strap
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By Garmin

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 Designed specifically for swimmers, the strap is a non slip, soft strap that is comfortable in the water. The transmitter stores heart rate data when in water and sends it to compatible devices when out. This transmitter is compatible with the 920XT, Fenix 3, and Epix

    This 2.4 GHz ANT wireless, non-slip strap, stores and forwards heart rate data to compatible devices. It stays in place, even during wall push-offs. Once out of water, real-time heart rate, interval summaries and stored heart rate are transmitted.

    The HRM-Swim stores heart rate data when underwater, then forwards it to the 920XT / epic / fenix 3. Great for Pool Swims and Open Water Swims.

    Heart Rate Info
    Supports heart rate variability and advanced heart rate features
    ANT+ heart rate
    Stores and forwards heart rate

    Compatible with

    Forerunner 920XT

    Tactix Bravo

    Fenix 3


    Water rating 5 ATM
    Stores up to 20 hours of heart rate data during swims, then forwards it to a compatible devices at the end of the session
    Sends real-time heart rate to the watch when the monitor is out of the water
    Swim interval heart rate statistics
    Resistant to Pool Chemicals

    Transmitter Unit Battery CR2032
    Transmitter Unit Battery life Approx. 18 months when swimming 3 hours per week

    A simple bi-fold adjustment reduces elastic weight and makes sizing easy.
    Dimensions -
    23.0 to 57.0 inches in length x 1.5 inches wide x 0.5 inches deep
    58.0 to 145.0 cm in length x 3.8 cm wide x 1.2 cm deep

    Weight -
    2.5 oz
    72 g

    Transmitter Unit
    Dimensions -
    29.4 x 51.4 x 8.5 mm

    1.8 oz
    51 g

    Garmin Connect Compatible
    View a complete picture of your activities with Garmin Connect, the free online community where you can save, plan and share. Create workouts, training plans and goals to get the most out of your device. View detailed swim metrics including heart rate graphs, swim pace, stroke type, mapping and more. Instantly upload through the Garmin Connect Mobile app to share before you finish cooling down. Plus, follow your activity tracking stats, including daily steps, distance and calories burned.


    Physical Specifications

    • Unit dimensions (LxWxD): 23.0”-57.0” x 1.5” x 0.5” (58.0 - 145.0 x 3.8 x 1.2 cm)
    • Weight: 2.5 oz (72 g)
    • Module size: 29.4 x 51.4 x 8.5 mm
    • Module weight: 1.8 oz (51 g)
    • Size adjustment: Bi-fold
    • Sizing range: 23.0”-57.0” (58.0 - 145.0 cm)
    • Battery: CR2032
    • Battery life: 18 months (swimming 3 hours per week)
    • Water rating: 5 ATM


    • ANT+® heart rate: yes
    • Supports heart rate variability and advanced heart rate features: yes
    • 2.4 GHz ANT wireless communication protocol: yes
    • Running dynamics: no
    • Stores and forwards heart rate: yes
    • Swim interval heart rate statistics: yes
    • Non-slip design for pool swimming: yes
    • Pool chemical resistant: yes


    HRM USA is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase any product sold by an Authorized Dealer of that specific product offered at lower price. Proof of lower price is required.

    Here's how to qualify for Price Match:

    • If you find a qualifying lower price online, call 1-800-403-8285 or 215-259-2700 Between 9am - 6pm EST and one of our employees will assist you with the price match request.
    • On qualifying products, HRM USA will then verify the current price to complete the price match.

    Some exclusions apply:

    • Services such as custom imprinting, extended warranties, ect. 
    • Items must be in advertised as New Condition, HRM USA will not price match against Used, Newly Overhauled, Manufacturer Refurbished, or Open Box Returns
    • Out of Stock or Preorder items do not qualify
    • Products shipped from or sold by third-party sellers (Marketplace Sellers) on Website
    • Price Match will take into consideration final value costs, including shipping and taxes.