Hello Lisa, great question! You can tap a Quick message as a response or if you prefer to create your own response there are many methods to choose from. Other than the microphone feature, you can also respond with an emoji or doodle. To text you can write letters on the watch face which will be converted into text or you can create/edit Quick messages by writing letters on the watch face. Just like with text input, written letters will be converted into text. ^Elizabeth