Fitbit

Keep fit with Fitbit

This California tech company produces the famous Fitbit activity trackers. An activity tracker is a Wi-Fi or Bluetooth enabled device, which you wear on one or, both wrists. Throughout the day, it monitors the number of steps you take, using an on-board accelerometer, as well as your heart rate, and thereby calculates the number of calories you've burned.

Most also tell the time, doubling as a watch. Some fitness activity trackers have an onboard GPS, but most can sync with your smartphone's GPS to track your actual distance walked, jogged or run. Many fitness apps can incorporate this data into a personalised exercise plan. However you choose to track your activity, there is bound to be a Fitbit for you on eBay.

Fitbit Alta HR

Available in black or stainless steel, the Fitbit Alta HR incorporates the PurePulse heart rate monitor, auto sleep tracking, various alerts from your phone, and SmartTrack automatic exercise recognition. It can also be configured to issue automatic reminders to move, at automatic, or scheduled times. The Fitbit Alta HR has a battery life of up to 7 days.

Fitbit Flex 2

The Fitbit Flex 2 comes in a wide range of colours. The tracker itself is removable, and can be worn in any interchangeable band, or in jewellery-style bangles, or necklaces. This model is swim-proof, and has a battery life of up to 5 days. It takes push notifications from your phone, recognises the exercises you do automatically, and tracks your sleep as well as your activity throughout the day.

Fitbit Charge 2

The Fitbit Charge 2 comes in 6 colour schemes, and features a bright LED display. Its battery life can extend to 5 days, and it connects to your phone's GPS.

Fitbit Blaze and Fitbit Ionic

The Fitbit Blaze, and Ionic are combination exercise trackers, and smartwatches. In addition to all the standard Fitbit features, they offer guided breathing sessions and large, full-colour screens.