Haylou RS4 Amoled Smart Watch with SpO2 - Black

Summary:

Compact BodyHD Large Display: Haylou RS4 is specially made for sports. Easily check information with the 1.78inch large touch control display.

Blood Oxygen Testing :
Sleepiness and fatigue after high-intensity exercise or work is a sign of insufficient oxygen in the body. Raise your wrist to test your blood oxygen level and keep your health under control.

Heart Rate Monitoring :
Haylou RS4 can accurately detect your heart rate 24 hours a day and detect even slight change, welly knowing your every heartbeat.

Sleep Monitoring :
The percentage of deep sleep is an important criterion of sleep quality. Haylou RS4 actively monitors sleep time and status to help you develop good sleep habits.

Breathing Training :
Perform guided breathing exercises at a set rhythm to alleviate stress anytime and anywhere, easily restoring vitality.

Supported OS:
Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries.

Sensor:
Heart rate sensor, motion sensor, blood oxygen sensor ,Sleep monitoring, SpO2 tracking.