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1. Walkie-talkie
Hello, childhood! That's right: Your Apple Watch can double as an old-school walkie-talkie. The app should come pre-loaded on your Watch, so once you add another Watch-wearing friend (pulled from your iPhone contacts) within the app, you can chat whenever you want as long as that friend is wearing their Watch at the time and has the app enabled (which can be done quickly from Control Center). Your message will transmit as instantaneously as it would from an actual walkie-talkie, and there are no distance restrictions!