I got the ZGPAX for fun; because it runs a full version on Android on a tiny screen. It has a front facing camera, WiFi, Bluetooth, GPS, and accepts a GSM phone SIM. This literally is a watch phone, and I got an AT&T prepaid account to test it. It makes phone calls; although, you need to use the earbuds that come with it to hear very well. The speaker is very small and you have to get close to hear it. But, it also accepts a micro SD card, and it serves as a great little music player, and photo viewer. It also has an FM radio chip, so it serves to listen to radio when you like. However, the tiny screen is impossible to type on, and it took forever to connect to my WiFi and I still haven't been able to correctly log on to GMail. I need to find a fine point Capacitative screen stylus to insert the tiny letters and numbers. However, I can see myself wearing this on my left wrist, and my Gear Live on my right wrist occasionally. Just call me Two Smart Watch FutureLawyer. For a detailed review of the good, the bad and the ugly, check out ZGPAX S5 Review.