The Global Wearables Market in 2015
The opposite appears to have been the case for wearables market leader Fitbit. The company that specializes in fitness armbands considerably cheaper than most smartwatches saw shipments jump by more than 70 percent during the holiday quarter.
Despite consumers’ ongoing skepticism about the value added by smartwatches, the global wearables market grew by 172 percent in 2015. Fitbit, Apple and Co. shipped a total of 78.1 million devices in the past year, up from 28.8 million in 2014.

Description
This chart shows worldwide wearable device shipments by the Top 5 vendors in 2015.