The following devices are certified findable with Find My Device:
• Apple Watch / iWatch Series 1, 2, 3
• All iPhone models past 4
• iPad 3,4, iPad mini 2,3, iPad Air, iPad Air 2, iPad Pro
• Apple Pencil
• JBL Charge, Flip 3
• Samsung Gear S3
• MacBook Pro
• Misfit Shine & Flash
• Microsoft Band 1 & 2
• Jawbone UP24, UP2, UP3, UP4
• Bellabeat Leaf
• FITBARK
• Garmin watches
• Many others
The app's scanner can track other Bluetooth 4.0 devices such as hearing aids that are powered on and actively advertising.