Watches have traditionally used to mark the time when moments start. The Stop The Time Watch from What? is used to mark the time they happen. Thanks to a Bluetooth 4.0 connection, a companion app, and a dedicated "time-stopping" red button, this watch lets you save the precise time a noteworthy moment happens, then expand upon it in the app with notes and photos. The watch face itself has an e-Ink display to show how many of your five moments per month you've used, and sits behind traditional watch hands that give you the current time. Powered by quartz movements, it's available in four styles, including a pocket watch, the Cold War-inspired Radar, and in both the Modern and Classic interpretations shown here.