Apple, Fitbit, and Xiaomi remain in heated competition over the top core wearables position. Meanwhile, Garmin continues a strong run, quickly rising through the core wearables ranks, and Samsung gains back some share. Our report tracks core global wearable shipments and market share by hardware vendor by quarter. Wearables, for this report, is defined as the "core" wearables of fitnessbands plus smartwatches. Our report can be used by device makers, component suppliers, operators, software developers, content suppliers and other stakeholders to determine the size of the main global wearables market.