Lezyne is celebrating the tenth year of its GPS ventures by retooling the entire line, adding yet more functionality to designs that already define the leading edge of the feature-to-price ratio. The Macro GPS HR Loaded Bike Computer is no exception, and it combines the Macro GPS's functionality with a heart rate monitor strap in order to complete the circle between ride details and biometric data. The head unit itself essentially packages the same improved functionality of the updated Mini GPS in a larger, more user-friendly footprint. It's still a barely noticeable addition to the cockpit, but the larger screen--equal to the Super GPS's screen and almost twice the size of the Mini--provides an option for those who want a supremely affordable GPS head unit with intuitive simplicity but an easier-to-read screen. Compared to the more expensive Super GPS model with which it shares a screen size, the Macro GPS drops features like Glonass connectivity, ANT+, and the built-in barometer and accelerometer. None of these omissions hamper the Macro's essential mission of providing satellite-generated data to record and improve your ride experience unless you're planning a gravel tour through the former Soviet Union or only own ANT+ accessories. Those omissions are even less noticeable in the presence of Lezyne's new Ally app, which allows the Macro GPS to sync with a smartphone in order to do what even the previous generation of the Super couldn't: provide live navigation and Strava syncing. Lezyne Ally lets you set pre-mapped routes to follow, and it also keeps tabs on segments when you're in the hunt. Even without a smartphone, the Macro GPS reads, displays, and records Bluetooth broadcasts from power meters, cadence sensors, the included heart rate monitor, and whatever other ancillaries you've got hanging on your frame. This data is all packaged for tidy transfer to Lezyne's Root GPS program, which is accessible through the brand's homepage and which provides an uplo...