Sleeptracker Pro Review - TechnologyReview
A review of the Sleeptracker Pro wrist watch has been posted over at TechnologyReview. 'The watch -- which rises 3/4 of an inch off the wrist -- is gigantic largely because it has an accelerometer inside to detect when it's moving. The principle is that this happens when the wearer is in the lightest phase in the sleep cycle, nearly awake. So if you need to start your day by 7 a.m., you set the watch's alarm for that time -- but you also select whether you'd be willing to wake up anywhere from 10 to 90 minutes earlier if the watch detects a better moment. The thinking is that it's better to have the watch vibrate or chirp at 6:48 if it senses you're in a near-waking light sleep -- from which you could spring out of bed belting show tunes -- than to drone on until 7 and risk falling into a deeper sleep from which you'd stir groggily.'