Most "racing" watches sport nothing more than a fancy chronograph to count lap times. But the Halda Race Pilot Watch ($TBA) isn't most watches. This unique timepiece features two interchangeable modules that allow you to switch between a traditional or digital face as you please. The mechanical module is an automatic chronograph with a Zenith movement and a 50-hour power reserve, while the digital race module packs info about 150 of the world's best-known race tracks inside, and uses that into to calculate average speed, measure lap times down to 1/100th of a second, and a stainless steel case back that's designed to work as a resonance system, letting you hear your alarms above the din of the engine.