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(Pocket-lint) - Sony has announced a second generation activity and fitness tracker that maintains the core design and abilities of its first, but adds a heart rate tracker to more accurately judge pulse and cardio information.

The Sony SmartBand 2 looks almost identical to its predecessor, but the module under the wristband now contains a biometric sensor to read a wearer's heart rate.

Its information is sent to the Lifelog smartphone application (for Android or iOS) as before, but it has also been updated to be able to read the heart rate data and therefore better gauge overall fitness, excitement and stress levels.

In addition, the band has an accurate pedometer to track steps - which we praised in our review of the first model - and there is sleep detection too, with the SmartBand 2 designed to be comfortable enough to wear twenty four hours a day, seven days a week.

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Like the original, the SmartBand 2 can also alert you when you have a call, message, email or tweet through vibration and pulsing LEDs on the strap. You can also use the band to play, pause or skip through music tracks playing through a phone or tablet.

And it will alert you when you've strayed too far from either.

Its battery life is claimed to last up to two days and the device can be fully charged in around one hour. It will be available globally from September in four colours: black, white, pink and blue. Price is yet to be revealed.

The Gear Loop

If you love tracking stats and crunching the numbers on your latest outdoor activity, you'll love The Gear Loop. Our new sister site is here to bring you the freshest news, the most honest reviews, informative guides and inspirational travel features that cover all outdoor active lifestyle pursuits, from sea to summit. Whether that's running or cycling, winter sports or water sports, The Gear Loop has got it covered.

Writing by Rik Henderson. Originally published on 20 August 2015.