Fitbit has quietly added a major feature to the Charge 5’s activity trackers and it’s all about tracking your phone rather than you.

The latest firmware, version 57.20001.171.50, which arrived on Tuesday, adds the ability to ping your paired smartphone and make it make a loud noise to find you. After using the “find phone” button, pressing the “cancel” prompt on the Fitbit Charge 5 will stop the noise.