2breathe Sleep Aid

This product is nice and it is a sleeping tracker device. It is strapped around your waist prior to go to bed, It will track the rhythm of your breath and transform it in to time. The guiding tone which shows your prolonged exhalation, as your breathing slows down, records when you actually fall asleep.
A detailed session report shows users the number of breaths taken, how well they followed the tones and when they fell asleep.
It has a battery and it last long and it has a blue-tooth connectivity and it can be synchronized with your smart phone in order for you to reading the displayed record from the device. This device can track your sleep duration.