The Pulse replaced my Jawbone UP. Sync and tracking the different functions work perfectly. The included belt also sits very pleasant. However, there is a point of not going in my eyes: The Pulse sits too loosely in the bracelet. Already in the first test yesterday of pulses has fallen after a few movements of the band, so I changed to the clip. Tonight the pulses has now "adopted" also from the bracelet. Thus, no sleep tracking was possible. One of the reasons why I bought the Pulse at all. Pay me now turn to the Withings Support ...