Sitting at the top of Fitbit's line up is the $250 Surge, which despite its smartwatch-like appearance is more serious about fitness tracking than any of Fitbit's cheaper models. It has more sensors, including GPS, a gyroscope and ambient light sensor, and it can tailor its metrics based on the specific workout that the user has done. And although the screen is much larger and more capable than Fitbit's other models, it still lasts up to five days on a charge.
However, only the Fitbit Charge is launching today. Fitbit says the Charge HR and Surge will launch early next year, but the company hasn't given a specific release date. All three devices will come in three sizes, and can pair with an iPhone, Android phone or Windows Phone.
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