My MARQ is Not Recognized By a Mac

MARQ® watches use MTP (Media Transfer Protocol) mode when connecting to a computer. This type of connection allows for the transfer of media files to the watch. Mac operating systems (OS X, macOS Sierra, and macOS High Sierra) only provide limited native support for MTP devices, which means these watches will not be recognized as external drives. 

Garmin Express™ software can be used to transfer music and other audio content to your watch. For help using or installing Garmin Express software, see related content.