How Real-Time Translation on Google Pixel Buds Works
If you're speaking English and the other person is speaking another language, you'll need to have that person speak into your Pixel or Pixel 2 phone. With Google Translate activated, the other person will speak through the Pixel phone in her or her language and you'll be talking through the earbuds. Along the way, Google Translate is translating what you're saying on the fly to each other.