Listen to your baby anytime, anywhere with the BT Smart Audio Baby Monitor. The BT Smart Audio Monitor works with Wi-fi, 3G or 4G so you can use it at home or when you are out and about on your usual mobile network. Just download the Free BT Baby Audio App ensuring you have a Wi-Fi connection and follow the on screen instructions and you will be listening in minutes. You can register up to 6 devices and listen on 3 devices simultaneously. You control who can listen by selecting the devices you want to link. Carry on listening to your baby whilst you send a text, read an email or browse the web. You can switch back to full screen mode at any time. Receive push alerts when your baby is crying and also receive info about your baby's sleeping patterns via the App. Compatability - Your device must have iOS 5 operating system or later. The baby unit requires a Wi-Fi router to set up and use. Compatability: iPhone 3GS, iPhone 4, iPhone 5, iPad1, iPad 2, iPad 3, iPad 4, iPad Mini, iPod Touch (5th generation).