To hear Polar’s tech folks tell it, their focus is and has always been accurate measurement of your heart rate as the foundation for a proper training device. Over the years, power measurement was added, too. But when Garmin came on the scene with GPS, it took a chunk out of their sales. So, for the past three years they’ve been integrating location tracking into their sports watches and the flagship V650 cycling computer introduced last fall and it’s breathed new life into the brand.
Now, they’re adding a second GPS cycling computer at an exciting price point – the M450. And it’s exciting for far more than its ability to track your ride’s whereabouts. It’s loaded to the gills with features and tricks that put many cycling computers costing twice as much to shame.
Full details and first ride impressions below, but let’s stick with GPS for a moment. The V650 will be adding mapping capability via a free software update in August. The mapping will use the built in GPS to show where you are thanks to Open Street Maps, which means free maps for anywhere in the world…
The M450 is Polar’s smaller entry. At €159 / $169 (or €/$199 with H7 heart rate monitor bundle), it’s not exactly “entry level”, but it costs a good bit less than the V650. And the features are far from entry level. It comes with GPS, fitness and orthostatic tests (just like the V800 watch), a built in light headlight, barometric altimeter, and all the other metrics you’d want. It’s Bluetooth 4.0 Smart only, not ANT+, so it’ll sync up with any compatible sensor. They opted for Bluetooth because that protocol already communicates with virtually every modern computer and smartphone.
That means the ride data is synced to your phone when the ride is over, and from there it can go directly to Polar’s Flow and, starting in October, it’ll also sync directly to Strava!
Another benefit of syncing it with your phone is that it can stream real-time activity directly to Flow as you’re riding. So, as soon as you’re done, your complete ride (or any portion of it as you’re riding, like at the top of a big climb) will be immediately available for analysis. Future updates to the Flow system could allow for settings changes to be sent directly to the computer wirelessly and text/call alerts and other updates (weather?) might eventually be pushed to the M450. Some of those alerts are already able to be pushed to the V800 sports watch and other Polar devices, so it’s not a stretch to imagine they’ll come here, too.

The M450’s initial setup and customization of the data fields on its screens is done through the Polar Flow online portal, then synced via USB cable to the device. There’s a maximum of four data points (i.e. speed, cadence, power, heart rate) on any one screen, or as few as one, but you can create up to eight screens, plus power zones, heart rate zones, Back to Start (more on that later) and power force vectors.
The Force Vectors shows how the power is being applied to the pedals around the entire 360º of crank rotation. It shows where you’re generating the most power as well as where you’re not generating any power (or even negative power). The numbers below the graphics are current and maximum force in Nm. Of course, you’ll have to be running the Keo Power pedals to get this metric. When the computer actually goes on sale, it should work with any official Bluetooth Smart power meter to give you basic power data, just not the left/right and force vector.
When setting up Power on one of the screens, you’ll just choose “Power” within Flow. Then, on the device, you’ll be able to tell it to show instant power or a rolling average of 1, 3, 5, 10, 15, 30 or 60 seconds (go to Settings / Sport Profiles / Cycling / Bike Power Settings. You still set your zones on Flow, and then you’ll be able to see your time in each zone on the computer in real time. You can set your FTP power from the device or on Flow.
This short video shows me cycling through the screens. There’s a short pause when I hit a cobbled section, then back to flipping through the screens.