More than 100 million smart watches will be in use worldwide by 2019, with a host of premium brand launches over the next 12-18 months bringing the category into mainstream consumer consciousness, according to Juniper Research. Differentiation is now shifting from hardware towards other features that allow new capabilities, such as GPS and NFC connectivity. These functionalities are likely to become standard in the next few years, particularly as Apple has offered payment and NFC capability via the Apple Watch. However, the range of functionality available means that it is unlikely that a 'killer app' for smart watches will evolve. Release