The new fitness smartwatch by Oppo combines its snoring evaluation algorithm with SpO2 monitoring to help detect breathing problems and track REM phases during a good night’s sleep.
OPPO Watch Free sport smartwatch has a 14-day-long battery life even with sleep monitoring » Gadget Flow
Oppo Watch Free review: Fitness tracker and smartwatch combine to create a fierce contender - Stefan Mieszek - Mirror Online
Smart Watch Fit for Android iPhone, TSV 5ATM Waterproof Smartwatch Sports Watch Fitness Tracker with Heart Rate Sleep Monitor, 1.69 Touch Screen Activity Tracker for Men Women
OPPO Watch review: An excellent Wear OS smartwatch - Android Authority
Oppo Watch 41mm vs 46mm: What Are The Key Differences?
OPPO Launches OPPO Watch Free Equipped with Health Functions
OPPO Watch Free, OPPO Enco Air2 Hands-On - GadgetMatch
Battle For Your Wrist: Huawei Watch Fit New vs OPPO Watch Free - Gizmochina
Oppo Watch Free goes all out on sports and sleep
Oppo Watch review
1.3 Inch Smart Watch With Remote Camera For Xiaomi, Huawei, Meizu, Samsung, Oppo, Vivo, LG And OnePlus From Nice_co_ltd, $104.49
Oppo Watches: Turn Sleep Mode On & Off