IN PHOTO: People participate in an aerobics class at the gymnasium Reuters/ Juan Carlos Ulate

Reports say Americans are already raving about new fitness trackers released by Fitbit. Last October, Gizmodo first reported the arrival of the wearables will be sometime in 2015. True to the report, Aussies will get their hands on the Charge HR and the Fitbit Surge a few weeks from now.

Charge HR

The Charge HR is one of the latest addition to Fitbit's line of fitness trackers. According to CNET, the Charge HR resembles the design of the original Charge but differs with the strap that it sports, which gives more fit to the new wearable. The new wearable adds to the Fitbit formula a heart rate monitoring feature called PurePulse optical heart rate monitor.

The report adds Fitbit's newest wrist wearable will continuously track the user's heart rate 24 hours a day and seven days a week through its new PurePulse system. Fitness aficionados will find the device rather useful in checking their heart rate especially during workouts, tedious running and even while sleeping. The user's heart activity will be stored in Fitbit's app.

Additionally, the new wearable can stand five days of continued action in just a single charge. Australians can avail of the Charge HR for AU$199.95 which would be available by the end of January.

Fitbit Surge

Another new entry to the Fitbit line of wearables is the Fitbit Surge. It features a black-and-white display, which some users might find unsuitable for its advanced apps. Similar to the Charge HR, the Surge also boasts seven days of battery life, especially with its simple display that will not eat up so much power. Reports say its battery is much better than the one day battery life of the upcoming Apple Watch.

The Fitbit Surge is equipped with an integrated GPS. However, the company warns the GPS feature consumes a big chunk of the device's power. The fitness tracker also features the company's PurePulse technology plus the ability to track various activities like counting the number of steps taken, distance traveled and even measuring calories burned. It also includes a vibrating alarm function to wake up its user.

The AU$349.95 cost of the Fitbit Surge is more expensive compared to the price of the Charge HR. The CNN report adds the fitness smartwatch will hit the Australian market by "early February."

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