This lightweight tracker is designed with not just functionality, but fashion in mind; available as a wristband, bangle or pendant – depending on your style. The Flex 2 measures your steps, distance, calories burned, active minutes, hourly activity and stationary time. SmartTrack lets you track different types of workouts, and sends the information to your Fitbit app. It also doubles as a sleep tracker – so you can keep an eye on how long and deep you have slept while setting goals, alarms, and reminders to help you develop better habits. Despite its sleek design, the wristband has a LED display, with colour-coded lights, which let you know when you have received a call or a text. With a battery life of up to five days, the Flex 2 is designed to help you track your activities, even on the most remote of adventures. However, when you’re not sprinting across a tropical island, the wristband will give you a little nudge if you’re not taking enough steps.