GitHub - fbiego/DT78-App-Android: Alternative app for the DT78 Smartwatch. Also works with DT92 & DT66. May work with watches that use the WearFit 2.0 app.
DT78 Smart Watch 1.3 inch Full Round Touch Screen Bluetooth Heart Rate Monitor Sports Fitness Tracker With Leather Strap For Android & IOS - Silver x Brown: Buy Online at Best Price
Modern dt78 smart watch For Fitness And Health - Alibaba.com
2020 New Dt78 Smart Watch For Men Ip68 Waterproof Full Touch Screen Smartwatch For Android Ios Phone Sports Fitness Tracker - Smart Watches - AliExpress