ESTG is selling the M16 smartwatch worldwide via AliExpress. The gadget has listed health features such as blood pressure, blood oxygen level and heart rate monitors. You can also use the device to make and receive calls via Bluetooth. Plus, a 600 mAh battery provides up to 10 days of life with typical use.https://www.notebookcheck.net/ESTG-M16-smartwatch-with-alleged-blood-pressure-monitor-and-600-mAh-battery-available-globally.669792.0.html
That claim of 10 days battery life is really impressive.
I assume that means about 3 or 4 days in the real world, right? Still pretty good.