Sleeptracker
Sleeptracker is a range of watches which monitor sleep states using physical signals. Sleeptracker watches are designed to determine when sleep is lightest and ring an alarm at one of these points, when waking is easiest. Sleeptracker records the times of lightest sleep during the previous night and these can be reviewed directly on the watch as a way of assessing sleep quality. Deluxe models allow sleep data to be downloaded to a PC and sleep history to be reviewed using included software.