Don’t call the Motorola Hint a Bluetooth headset. It makes everyone at Motorola wince. They’d rather you call it a wireless earbud, or, in a brilliant slip of the tongue from Motorola design chief Jim Wicks, an “earable.” The Hint is a tiny, Bluetooth-enabled earbud that is designed to keep you in immediate, voice-enabled touch with the world around you. But it’s not for phone calls, or at least not just for phone calls. It’s for getting directions, for doing quick voice searches, for hearing the text message you just got or quickly adding something to your to-do list. The Bluetooth headset is dead; long live the wireless earbud.