While wearable devices are the tech industry's most hyped category for 2014, market researchers at the NPD Group predict that the market will begin to slow down quickly, contracting by 2016 before returning to more moderate growth.
Wearable devices first began to take off in 2013 with the popularity of the Pebble smart watch and various tiny fitness and health trackers. NPD believes that the market will grow to 48 million units sold this year, and will surge to 91 million units in 2015.