Ooyi OY4 Smart Watches for Men Women,48mm, Answer/Make BT Calls,Metal Frame 1.78" AMOLED IP67 Waterproof Sports Modes/Heart Rate/SpO2/Stress/Sleep Monitor for Android Phones & iPhone

★[1.78''HD Screen AMOLED] Ooyi is committed to bringing consumers better products. We have gone through thousands of tests and research on this newly developed Ooyi OY1 smart watch, and finally decided to use a 1.78''HD Screen AMOLED. has low energy consumption, the panel emits light independently, make it richer and brighter, and the screen can be clearly seen outdoors during the day.

★[Make/Answer Calls & Read Message] With a built-in microphone and speaker, you can easily answer and make calls via Bluetooth without taking out your phone. It also supports messages from Facebook, WhatsApp, Instagram and more. Whether you’re in a busy working environment or outdoors, you can always stay in touch with your family and friends.

★[Accurate Health Monitoring -Your Health Assistant] Ooyi OY4 Smart Watch come with a 24 hours heart rate sensor that helps you detect real-time heart rate throughout the day. And it will monitor your sleep status automatically provides comprehensive sleep quality analysis (deep /light /wakeful sleep) in App.

★[Sports Modes & IP67 Waterproof] Ooyi OY4 sports modes, including walking, running, cycling, skipping, basketball and so on, to meet the needs of most sports enthusiasts. During your exercise, fitness tracker will record your data like heart rate, steps, calories burned, distance and active hours in real time in App, with IP68 waterproof, it won't be damaged even when exercising.

★[Widely Compatible & Long-Battery Life] Work seamlessly with iOS or Android smartphones. Equipped with a powerful 300mAh battery that provides an impressive 3-7 days of continuous usage on default settings.