Here is UMIDIGI UFit Budget Smart Watch. The main feature of this watch is Blood Oxygen SpO2 Monitor. It also has a blood pressure monitor and 24/7 heart rate, monitor.
Where to purchase:
Amazon CAN: https://amzn.to/2xKdLha
Amazon USA: (( Not Available ))
UMIDIGI UFit Specifications:
Dimensions: 42 x 36 x 12mm
Weight: 39g (without the strap)
Colour: Starry Black Water Resistance
Rating: 5 ATM
Daily use mode: 7 – 10 days
Standby mode: 30 days
Display: 1.3″, 240×240 pixels, Color TFT LCD touch, 2.5D tempered glass with anti-fingerprint coating Sensors: Relative SpO2 sensor, PPG biological tracking optical sensor, 3-axis acceleration sensor, 3-axis geomagnetic sensor Bluetooth: BT5.0 BLE
App: VeryFitPro Compatible: Android 4.4, iOS 8.0 or above
Health monitoring: blood pressure monitoring, Blood oxygen(SpO2) monitoring, heart rate monitoring, sleep monitoring, stand reminders, female health monitoring
Sport Functions: 9 sport modes(Walking, Spinning, Running, Yoga, Hiking, Climbing, Treadmill, Bicycle, Workout), Count steps, distance, calories burned
Other features: Multi-language support, alarm, pre-set watch face, wrist detect, timer, stopwatch, phone alarm and notifications, incoming calls, message notifications, calendar notifications, app notifications, Find my phone, target reaching reminder, night mode, remote music control, battery level display.