Two Models: Insert SIM/TF card and use as a Single Phone Watch; Content with Android/IOS smart phones by Bluetooth and you can use it as a smart watch.
IPHONE can ONLY sync calls, no app needed; Android device can sync all with APK file installed. Smart Watch + Cell Phone Watch + Health Control + Media Control.
Entertainment Anytime and Anywhere: Built-in speaker and mic, make/receive calls directly from your wristwatch through or insert SIM card as a Normal Cellphone.
