Wearable device shipments for 2020 grew 28.4% to 444.7M units globally, led by Apple which grew 27.2% in Q4 and has 36.2% marketshare, followed by Xiaomi at ~9% — Worldwide shipments of wearable devices reached 153.5 million in the fourth quarter of 2020 (4Q20), a year-over-year increase …