Make a DIY Smartwatch Using ESP8266 : 7 Steps (with Pictures) - Instructables
Hack together your own e-paper smartwatch with this $50 open-source kit - The Verge
This DIY smartwatch is open source, so you can build your own (but you probably won't) - Liliputing
Diy - SmartPhone From Old SmartWatch | How To Make SmartPhone From Old SmartWatch #TheTechnoChannel - YouTube
Upgraded Version W26 W46 Smartwatch Iwo 13 Pro 1.75 Inch 320*385 Smart Watch Men Women Bluetooth Call Diy Dials Pk Dt100 W37 Pro - Smart Watches - AliExpress
Amazon.com: Smart Watch for Men and Women, 1.69" DIY Watch Face Fitness Tracker, IP68 Waterproof Fitness Watch with Heart Rate and Sleep Monitor, Calorie Step Counter Activity Tracker for Android iOS (Black) :