Check Out the Newest Jawbone Fitness Trackers

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Today, Jawbone announced two new additions to its fitness tracker lineup — the UP2 (an update of the UP24) and the UP4, which features first-of-its-kind payment technology for when you're on the go (runners, take note). Check out the features of the new trackers below!

UP4

UP4

The Up4 ($200) tracks it all: sleep, steps, distance, calories, and more — including heart rate monitoring so you can track your resting heart rate (similar to the Fitbit Charge HR). Also new: the UP4 syncs with your existing American Express account so you can tap to pay at any cash register that accepts contactless payments. No more having to reach for that sweaty $20 bill to pay for your water after a long run! The UP4 will be available in the Summer.

UP2

UP2

The UP2 ($100) is slimmer and has fewer features than the UP4, but like most trackers, it measures the basics: steps, distance, sleep patterns, and calories burned. The UP2 is available now in Black Diamond; additional colors coming soon.

Both the UP2 and UP4 are splash resistant, not water resistant, and sync wirelessly with the Jawbone app (available on iOS and Android), where you can log your food calories and also see "smart coaching" advice on how to improve sleep and reach your fitness goals. With these two new trackers added into the mix, the question remains: which fitness tracker is right for you?