Apple and Xiaomi have both overtaken Fitbit in Q1 2017, de-throning the long time core wearables leader. Apple holds the #1 position and this quarter has become the largest global core wearables vendor for the first time since Q3 2015. 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.