Locus Pocus Bond - Black Triangle - 4 Pack Compare features and price with Tile, TrackR, PebbleBee, Chipolo, and XY Findit. 1.75" per side, 3/16" thin, &gt; 80 db chime User replaceable coin cell CR2016 battery lasts 6-12 months. Crowd GPS - find it even when it is out of range of your iPhone. Built-in loop attachment point.