Google Translate Blog: Watch your language! 44 of them, actually.
Translate is built into the latest Android Wear software update, so you can have bilingual conversations even if you don’t have Google Translate on your phone, or if you’re away from your phone but connected via Wi-Fi.
And it’s easy to use - just speak into your watch to see your conversation translated into any of 44 languages. Flip your wrist to show the translation to a friend. When they respond in their own language, flip your wrist back, and you’ll see in your language what they’ve just said. Google Translate will automatically recognize which of the two languages is being spoken, so once you tap to start the conversation, all you and your buddy need to do is keep talking naturally.