Brand new in box, never used. Purchased direct from a mattress store. How It Works Beautyrest Sleeptracker is able to monitor even your slightest movements. It uses passive piezoelectric sensors which are capable of sensing even the smallest amount of pressure. By using this technology, Beautyrest Sleeptracker is able to monitor even your slightest movements. Improving Your Sleep Performance In the morning, you can wake up with Beautyrest Sleeptracker's smart alarm which sounds off when you're in a light phase of sleep, resulting in less groggy wakeups. Once up, you can review a full readout of your sleep data with corresponding personalized coaching insights delivered by Beautyrest Sleeptracker's artificial intelligence. These insights tell you precisely how to adjust your life in order to improve your sleep. Monitoring: respiration heart rate, light sleep, deep sleep, REM cycles. Records two sleepers at a time, WI-FI enabled, syncs to app. Personalized Tools Coaching tips: time spent in each phase of sleep, in REM, alarm system wakes you up at the optimal time, nightly scores daily, weekly, monthly sleep trend reports. All my items are shipped with care from my smoke free home in NH. Send me your BEST OFFER. I will do my best to accept it. Create a bundle of 2 or more items and save at least 10% and receive a shipping discount. FAST SHIPPING! 5 STAR SELLER! Thank you for looking!