IDC wearables research

11.4 million wearables shipped during Q1 2015

The top 5 vendors have grown their dominance of the market to three quarters from two-thirds in a year; Apple Watch could make a big impact on the market.
wearables

Worldwide wearables market to reach 47.7M units shipped this year

By 2019, total shipment volumes are forecast to reach 126.1 million units, resulting in a five-year compound annual growth rate (CAGR) of 45.1%.