WD My Book - External Hard-Drive Fitbit Alta support various RF protocols and

support various RF protocols and 300m RF control distance

make phone calls

Window A/Cs

change the song

WD My Book - External Hard-Drive Fitbit Alta support various RF protocols andWD My Book. Compact outside. Powerful inside. Store massive amounts of photos, videos, music and documents with My Book desktop storage. Complete Backup. Equipped with WD Backup software for Windows and Apple Time Machine compatibility for Mac, the My Book desktop hard drive can back up your photos, videos, music and documents. The My Book desktop hard drive also works great with Acronis True Image WD Edition software to schedule full system backups.