Update: Microsoft has now announced the Microsoft Band, a $199 fitness band that does everything described below. It goes on sale Thursday.

Microsoft hasn’t officially announced its wearable device, but it seems the company has accidentally published its desktop syncing client to the Mac App Store early. Whoops. The device is called the Microsoft Band (possibly Lumia Band, according to some currently non-functional support URLs) and sports a 310 x 102 resolution display.

The Microsoft privacy policy for the app lists some of the Band’s features: “Microsoft Band sensors help you keep track of things like your heart rate, steps, calories burned, and sleep.” Links in the document claiming to lead to a page with additional data, such as a list of sensors, currently lead to a 404 page.

Other key feature include the ability to get phone notifications on the Band, create reminders using Cortana, and more:

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