Jawbone UP4

Stylish design. Good sleep tracking. Useful Smart Coach feature. Makes payments via NFC.

No display. Not particularly comfortable. No heart rate measurements on demand or during activities. NFC payments require Amex. Relatively pricey.

Conclusion Although I like its Smart Coach and sleep tracking features, the Jawbone UP4 is light on features for the price. You can't monitor your heart rate continuously or on demand, it isn't very comfortable, and I'd much prefer a display to...

Smart Coach gives good advice ; Colorful, informative app ; Works with large number of third-party apps

Can't check heart rate continuously ; Expensive for the features ; Annoying clasp ; No display

This attractive fitness band has a heart-rate monitor, sleep tracking and mobile payments, but it is too expensive for what it offers.