Health and fitness fans on the right side of the Atlantic will be delighted to hear that Fitbit Flex, the wristband that keeps a check on your exercise rate and sleep patterns, arrives on British shores this week.

The £79.99 device competes with Nike Fuelband and Jawbone’s Up in tracking your daily steps, distance travelled, calories burned and sleep patterns – recording your daily activities automatically on an online dashboard, accessible on PC and mobile app. The Fitbit Flex and associated service integrates with a raft of other online weight management and fitness apps, including Endomondo, LoseIt, MapMyFitness, MyFitnessPal and Sparkpeople.

A new stat – Active Minutes – has been introduced by Fitbit which monitors how many moderate-intensity cardio minutes a user has completed throughout the day.

The wristband looks simple enough, but packs a number of technical innovations up its sleeve (well, actually your sleeve). Fitbit Flex is unique in offering Bluetooth 4.0 support, enabling the device to sync in realtime on supported mobile devices, including the Samsung Galaxy S4 in addition to the iPhone 4S, iPhone 5 and iPad.

NFC connections to the latest devices can also be initiated with a simple tap, with data synchronized in an instant.

Flex is water-resistant, so you can wear it in the shower but we’d recommend you don’t take it deep sea diving. Standard colours are a reasonably straightforward Black and Slate, however, £22.99 gets you a three colour accessory pack, with Teal, Tangerine and Navy bands.

The Fitbit Flex (£79.99) is available to purchase in store today at John Lewis and online at Amazon and Fitbit.com.