
UP4 by Jawbone Health and Fitness Tracker with Amex Payments: This fitness tracker lets you keep tabs on the factors that make up a healthy lifestyle by learning your behaviors and suggesting daily goals to reach. The advanced sleep tracking feature gives you detailed information about your sleep cycle, and sensors give you information about your heart rate whether you're active or at rest. Plus, you can link this UP4 band to your Amex card and make payments from your wrist.
Q: Does it track sleep automatically?
A: yes - it will track that you are asleep automatically. You do have the option to manually input your sleep time also