![Jørn Thyssen on Twitter: "Changing battery in my @Garmin HRM-TRI using an itty-bitty screw driver and @Ikea knife as per @dcrainmakerblog https://t.co/x5ozPe4Ok8" / Twitter Jørn Thyssen on Twitter: "Changing battery in my @Garmin HRM-TRI using an itty-bitty screw driver and @Ikea knife as per @dcrainmakerblog https://t.co/x5ozPe4Ok8" / Twitter](https://pbs.twimg.com/media/Cc33JDyWoAU6tb_.jpg)
Jørn Thyssen on Twitter: "Changing battery in my @Garmin HRM-TRI using an itty-bitty screw driver and @Ikea knife as per @dcrainmakerblog https://t.co/x5ozPe4Ok8" / Twitter
Garmin Fenix 3 - Garmin: Replacing the Battery in your Heart Rate Monitor ( HRM) The CR2032 batteries in your HRM-Run, HRM-Swim or HRM-Tri straps will last approximately 18 months, depending on use.
![Garmin HRM Tri Heart Rate Monitor HRM Run 4.0 Heart Rate Swimming Running Cycling Monitor Strap Original|Bicycle Computer| - AliExpress Garmin HRM Tri Heart Rate Monitor HRM Run 4.0 Heart Rate Swimming Running Cycling Monitor Strap Original|Bicycle Computer| - AliExpress](https://ae01.alicdn.com/kf/HTB1m9J8Q8LoK1RjSZFuq6xn0XXaB/Garmin-HRM-Tri-Heart-Rate-Monitor-HRM-Run-4-0-Heart-Rate-Swimming-Running-Cycling-Monitor.jpg_Q90.jpg_.webp)
Garmin HRM Tri Heart Rate Monitor HRM Run 4.0 Heart Rate Swimming Running Cycling Monitor Strap Original|Bicycle Computer| - AliExpress
![Introducing HRM-Tri™ and HRM-Swim™ – The First Heart Rate Monitors for Land and Water from Garmin® | Business Wire Introducing HRM-Tri™ and HRM-Swim™ – The First Heart Rate Monitors for Land and Water from Garmin® | Business Wire](https://mms.businesswire.com/media/20150722005189/en/477926/5/010-11254-03_HR_9010.jpg?download=1)