Haylou RS4Plus-Black 4.52 cm (1.78") AMOLED Digital 368 x 448 pixels Touchscreen

— 1.78" AMOLED Display<br>- & 60Hz Refresh Rate<br>- Haylou RS4 Plus 1.78" AMOLED Display <br><br>- Haylou RS4 Plus Magnetic StrapMagnetic Strap<br>- All-Day Heart Rate Tracking<br>- SpO2 and Temperature Monitoring<br>- Haylou RS4 Plus IP68 WaterproofI<br>- HD Retina Grade AMOLED Display<br><br>With 368*448 Pixel's unprecedented visual clarity, the large 1.78-inch screen provides a precise and clear experience anytime, anywhere. The 60Hz refresh rate continues to optimize the user experience, which is rarely for round smartwatches that can be currently available.<br><br>- 368*448<br>- Pixel<br>- 1.78-inch<br>- AMOLED Display<br>- 60Hz<br>- Refresh Rate<br><br>Haylou RS4 Plus HD Retina Grade AMOLED Display<br>Magnetic Strap is Comfortable to Wear<br>It can be quickly taken apart and is comfortable to wear and take off. Suitable for people worried about the belt buckle and hole size mismatch.<br><br>- Haylou RS4 Plus Black Magnetic Strap<br>- Haylou RS4 Plus Watch Faces<br>- 100+Online Watch Faces to Suit your style<br>- More than 100+ stylish watch faces, or even upload your photo as the background image for true personalization.<br>- 100+<br>- 100+ Sport Modes — A Trusted Fitness Partner<br><br>Haylou RS4 Plus has 105 workout modes. It can record real-time exercise data, helping you track and improve your athletic performance.<br>Three types UI of Haylou RS4 Plus<br><br>Multi UI Main Menu According to Your Style<br>Haylou RS4 Plus has various kinds of UI operations: a cellular model and 360° unrestrained smooth sliding. <br><br>Smart Sleep Monitoring with Deep Sleep Recording Helper<br>The percentage of deep sleep is an essential criterion of sleep quality. Haylou RS4 Plus actively monitors sleep time and status to help you develop good sleep habits.<br><br>Haylou RS4 Plus SpO2 screen<br>Smart SpO2 Tracking<br>Sleepiness and fatigue after high-intensity exercise or work are insufficient oxygen in the body. Raise your wrist to test your blood oxygen level and keep your health under control.<br><br><br>Smart 24-hour Heart Rate Monitoring<br>Haylou RS4 Plus can accurately detect your heart rate 24 hours a day and detect even slight change, welly knowing your every heartbeat.<br><br>All Day Stress Monitoring<br>The Haylou RS4 Plus can monitor your pressure all day-even while sleeping. The watch is a comprehensive and easy-to-use health partner for everyone.<br><br>Female Menstrual Cycle Reminder<br>The menstrual period and the ovulation period can be recorded and can be more intimate reminding before coming.<br><br>IP68 Dustproof and Waterproof<br>The watch is IP68 waterproof. There is no need to take off the watch when washing your hands, and you can easily cope with sweating during workouts or stormy rains when you are out.<br><br>10-day Battery Life — No Need Recharging During Workdays<br>Haylou RS4 Plus packs an existence of super-powerful features in its slim body yet still has enough endurance to last for up to 10 days from a single full charge with typical usage.<br><br>Typical usage: 28 daysHaylou RS4Plus-Black. Display diagonal: 4.52 cm (1.78"), Display technology: AMOLED, Display resolution: 368 x 448 pixels, Touchscreen. Battery capacity: 230 mAh. Weight: 57.6 g. Band colour: Black