Jawbone UP4 fitness tracker lets you pay for items using American Express




Jawbone may be gearing up to ship its UP3 fitness wristband tracker after months of delays, but in a surprising twist, the company already has two other devices up its sleeve: the UP2 and the UP4.

While the UP2 is a scaled down version of the UP3 (announced this fall) in terms of price functionality, and will replace its popular UP24 wearable, the true standout in the new announcement is the UP4 (shown above and below). The UP4 allows users who are American Express customers to make store purchases with just a tap at checkout.

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