With this SKY SKYWATCHRED smart watch is compatible with Android™ and iOS™ Smartphones. The 1.54" IPS screen with touch control makes it easy to control when on-the-go. Get notifications on your wrist at a quick glace without taking out your phone. With the built-in SIM card slot use 2G internet, make or receive phone calls or text messages without Wi-Fi or when you don't have your Smartphone on you. Download the Fundo wear app to set-up your watch with your Smartphone. Keep track of your steps and sleep with the Sky watch.