Those of us that can speak more that one language we'll have to choose which one we prefer. Because there's no fast language switching on the Apple watch the way we are used to on the iPhone (the keyboard language sets the language). On the Apple Watch it's one or the other. Sucks considering more than half the population speaks more than two languages. Maybe watchOS 1.0.1 will think of us? From the user guide: "you use more than one language and your dictation isn’t transcribed in the right language for a conversation, you can still send it as an audio clip. To change the dictation language, change the Siri language on iPhone in Settings > General > Siri, then start a new conversation"