TrackR products use two different battery types depending on the model you are using. The TrackR bravo uses a CR1620 battery, and the TrackR pixel, TrackR spot, and TrackR wallet use CR2016 batteries.
Please see the chart below for a visual guide to what your TrackR uses.
|TrackR bravo uses a single CR1620 battery|
|TrackR pixel uses a single CR2016 battery|
|TrackR spot uses a single CR2016 battery|