How do I replace a broken loop band on an older Polar watch?
Answer
Identify the exact Polar model first, then order a matching official or compatible loop/strap for that model. Most Polar bands swap with spring bars or a quick-release buckle; the watch module itself usually does not need repair.
Follow these steps
Confirm the exact Polar model
Check the engraved text on the back of the watch, the original box, or Polar Flow / Polar Beat under your paired devices. Note the full model name (for example Ignite, Vantage, Unite, or an older A-series).
You should see: You have a specific model name you can use when searching for a replacement band.
Check Polar’s official spare parts list
On Polar’s support or accessories site, search your model for a wristband, loop, or strap. If Polar no longer sells that part, note the strap width and attachment type shown in the product photos.
You should see: You know whether an official band is still available or you need a compatible aftermarket strap.
Remove the broken band safely
Use a spring-bar tool or the release method for your model to remove the damaged loop. Keep the spring bars or pins if the new band does not include them.
You should see: The Polar module is free of the broken strap without scratching the case.
Install the matching replacement band
Fit the new loop or strap to the same lugs, seating spring bars fully until both sides click. Confirm the band is oriented so the buckle or loop faces the correct way when worn.
You should see: The watch sits securely on the wrist with no loose pins or uneven gaps.
Verify fit and sensor contact
Wear the Polar snugly enough for heart-rate or activity tracking if your model uses a wrist sensor, then open the Polar app and confirm the device still connects as before.
You should see: The watch stays in place during movement and continues to sync normally.
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Extra tips
What to look for: The model name or number on the back of the Polar unit, the band attachment style (spring bar vs proprietary clip), and whether Polar still lists a replacement strap for that model.
Before you change anything: Write down the exact Polar model from the case back or Polar Flow / Polar Beat device details. Measure or note the strap width if buying a third-party band. Buy from Polar or a reputable parts seller—avoid listings that ask for your Polar account password. Never force a band that does not match the lug style.