Jawbone’s Up4 is its most advanced, and expensive, tracker yet

(credit: Valentina Palladino)

Not everyone was impressed with Jawbone's Up2 and Up3 trackers. Even with their bright colors and slim design, they felt peculiarly basic. The Up3 especially seemed to take a few steps back, with a clasp that was frustratingly difficult to secure and heart rate sensors that only measured your pulse once a day and nothing more.

But the wild card was the Up4. The most premium of Jawbone's devices, it became available after the Up2 and Up3, does everything that the first two can do, and includes American Express NFC payment integration. A software update released in September addressed some of those previous product issues for all three Up bands, including passive heart rate monitoring and automatic sleep detection.

Now that all of Jawbone's products are on the same page with the most basic features, the Up4 aims to be the stand-out tracker of them all by letting you take a portion of your wallet with you even when you've left it at home.

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