Huawei's latest smartwatch here and it is rather affordable. Priced at AED 399 (~US$109) and thought to retail for €119 in Europe eventually, the Huawei Watch Fit looks like a stretched Apple Watch without a Digital Crown. The Huawei Watch Fit has a SpO2 sensor, an optical heart rate sensor, 5 ATM water resistance, GPS and up to 10 days of battery life.
https://www.notebookcheck.net/Huawei-Watch-Fit-Affordable-smartwatch-launches-in-multiple-colours-with-a-SpO2-sensor-a-heart-rate-monitor-and-GPS.490841.0.html