To wear Inspire 3 clip, be sure to put it in "Clipped on body" mode. To do so, remove tracker from wristband and insert into clip. From the clock face, swipe down from the top of the screen until the menu slides over. Scroll down and tap the screen to change from "Worn on wrist" to "Clipped on body".
You can clip Fitbit Inspire 3 securely to a belt, waistband, pocket or bra. Always use the silicone clip when clipping it to a bra or waistband, as the tracker is not meant to be worn in direct contact with the skin. Make sure the Fitbit Inspire 3 display faces outward when clipped to your bra.