The Sense-U Smart Baby Monitor 3 is worn on your baby's diaper/sleepwear and tracks baby's abdominal movement, feeling temperature, and rollover / sleeping position. The Sense-U Smart Baby Monitor 3 comes along with a base station which notifies you when your baby may need you, with lights and sounds, plus mobile notifications from your smartphone, anytime, anywhere. With this invaluable information, it provides parents more peace of mind and better sleep than traditional video cameras, or other smart monitors with no real-time alarms.