Wearable Computing Market By Product Type (Smart Watches, Extension Smartwatch, Classic Smartwatch, Standalone Smartwatch, Smart Jewelry, Fitness Trackers, Head-Mounted Display, Body Worn Cameras, Others); By Connectivity (Bluetooth, Wi-Fi, 4G/5G, Others); By End-User (Fitness & Wellness, Healthcare, Entertainment, Defense, Gaming); By Region (North America, Europe, Asia Pacific, Middle East & Africa (Mea), South America) : Global Opportunity Analysis And Industry Forecast 2021-2030