After a relative eternity of wait, Sony has officially released its SmartBand SWR10, an activity tracker that’s available exclusively in the US thus far. Though we got a first look at the device at CES, the March release was pushed back for unknown reasons. That said, with Apple’s redoubled efforts to put fitness tracking and health-focused, third-party app integration into the new iOS, expect further bands, apps, and devices to continue to bubble up.