4G Smartwatch Phone

KOSPET OPTIMUS 2 is a wearable computing device capable of extending the capabilities of the wearer’s smartphone to the watch. The wearer can use the watch’s interface to initiate and answer phone calls from their mobile phones, which

provides a Global Positioning System (GPS), 1.6” large screen display, and large memory smartwatch.https://kospet.com/products/kospet-optimus-2-smartwatch
Electronic paper wristwatch is a wristwatch equipped with an electronic paper display, which can display time, week and date. The ways to realize electronic paper technology mainly include cholesterol liquid crystal display technology,

electrophoretic display technology (EPD) and electrowetting display technology.

https://kospet.com/products/kospet-optimus-2-smartwatch