With the Alta HR, Fitbit updates its most stylish tracker with continuous heart rate monitoring, better battery life, and smarter sleep tracking. The Alta HR is slim and you can easily swap out the ...

Fitbit has eight different fitness trackers on the market right now. And while the company’s financials are downright troubling, it’s still shipping more product than every other wearable company.

Fitbit on Monday revealed the Alta HR, an upgrade of its more fashion-oriented fitness tracker, plus plans to update the software on two of its other devices with better sleep tracking. The Alta HR ...