Garmin buys Moxy Monitor, teeing up a possible 'Muscle Battery' feature
What's the deal? GarminDealroom has a profile for this one. Try Dealroom → has confirmed the buyout of Moxy MonitorDealroom has a profile for this one. Try Dealroom →, one of the longest-standing specialists in muscle oxygen sensing. The deal value was undisclosed and was announced in September 2026.
What's the endgame? Moxy's sensors use near-infrared spectroscopy to monitor oxygenation directly within working muscle tissue. That data shows how hard a specific muscle group is working during a run or cycle — and how quickly oxygenated blood returns during rest.
Why now? Earlier this year, Garmin filed a trademark application for "Muscle Battery." It points to a feature built around muscle oxygen saturation, giving the acquisition a clear strategic logic.
Garmin's existing Body Battery gives a macro-level fatigue score from wrist-based heart rate variability and stress. Muscle Battery could offer a localized twist, shifting focus from systemic energy to peripheral muscle fatigue.
What comes next? Muscle oxygen can't be measured accurately from the wrist. So the deal suggests Garmin may develop dedicated hardware worn on specific muscle groups, such as the quads or calves, with Moxy's sensor architecture and calibration algorithms as a ready-made foundation.
What could go wrong? Garmin typically acquires a couple of companies per year, and most don't bear fruit so directly. The purchase confirms the technology but not a shipping product.
The signal: If Garmin becomes the first mainstream wearable brand to turn raw muscle oxygen metrics into a Muscle Battery breakdown, it would gain a distinct edge on rivals. For now, only time will tell.
Read more: wareable.com
Image credit: Generated with Gemini
