Very inaccurate tracking compared to my other devices. Software needs a lot of work to be useable. For example, if you are awake in the night for a bit, it just says I only slept 3 hours twice instead of combining the different periods of sleep. The inspire2 watch has a nice band, but display is either too dim outside or is too bright at nighttime with little control over brightness other than to dim it slightly. other companies that don't focus on activity tracking do seem to test much more