Trusted by millions of parents around the world, the Smart Sock Plus (0-5 yrs) tracks your child’s oxygen levels and heart rate with proven pulse oximetry technology that goes beyond the capabilities of any other baby monitor. The Owlet Smart Sock Plus will immediately send alerts to the Base Station and Owlet App if readings leave pre-set safe zones, so that you know when baby really needs you. The free Owlet App also allows you to receive insights with the sleep history feature which can be used to create new routines as your baby grows. Uses accurate and proven pulse-oximetry technology to monitor child’s oxygen level and heart rate while they sleep (0-5 Yrs). Battery life: 16 hours (get 8 hours in 20 mins or a full charge in 90 mins). Get notifications on your phone in real time by using the free Owlet App. Parent Unit Features1 parent unit included - portable. Mobile phone app compatible. Touchscreen. Notifies you of baby activity with audio, vibration and light up display alert. Out of range indicator. which are: 4. Low battery indicator. Parent unit mains powered only. Parent unit includes mains adaptor - (included). Baby Unit Features1 baby unit included - portable. Records baby Heart Rate, oxygen and sleep trends. which are: 3. Baby unit battery powered only. - batteries required for baby unit 1 x Li-Ion (included). General information:WiFi connection not required. Model number: BMPL7NNBBYH. Manufacturer’s 2 year guarantee. EAN: 0850017640863.