Very Expensive and Doesn't Work! - it charges for a full year (with no grace period to cancel when you figure out it doesn't actually track your sleep!). It doesn't register when you're sleeping, doesn't have any real information about your sleeping other than the 'sleep debt' figure (& that is always wrong since it can't track your sleep!) History never saves like it's supposed to (would be wrong anyways). Stuck with this 'expensive widget' for a year now.. and £40 down. RUBBISH.