It's more than just a watch. It's a highly efficient and mobile communication device with convenience in mind. The watch can connect to your smartphone, via Bluetooth, giving you instant hands-free access to calls to and from your smartphone. It also has its own SIM card slot, allowing it to become its own communication device that can make or receive calls, text and read or send emails etc. Life just got a bit easier with smart watch! Calls, notifications, music all in one from your wrist, and it is so light that you don't even aware its presence. Along with NFC, not like other smartwatches, the NFC function makes connecting phone via Bluetooth just by taping them together. No more complicated pairing process. This watch can be used as a standalone phone with a micro SIM card, meaning you actually can do everything on your wrist. The adjustable wristband with soft material give you a comfortable wearing experience.