How to Make SmartWatch || DIY & Electric Project
$2 for 10 PCBs prototype: jlcpcb.com
Make a DIY wifi smartwatch using OLED display for under 20$. The esp8266 module has an inbuilt wifi module which allows the watch to connect to the internet. You can control other electrical appliances remotely through the internet from anywhere in the world. This is possible due to IoT services.
PCB Design Credit :