Exceptionally priced, the BioBand Smartwatch is not only a digital watch, but also a fitness and sleep tracker. It works using a downloadable app for your smartphone (compatible models listed below), and will tell you how many steps you’ve taken each day, distance covered and calories burnt, plus how long and how well you’ve slept. It will also notify you when you’re receiving a call or message on your phone (Android phones only) and can be set to remind you of appointments. All modes are easily accessed using the side button.