HD Retina Grade AMOLED Display

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,

• 368*448 Pixel
• 1.78-inch AMOLED Display
• 60Hz Refresh Rate

Magnetic Strap is Comfortable to Wear

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.

100+Online Watch Faces to Suit your style

More than 100+ stylish watch faces, or even upload your photo as the background image for true personalization.100+* 10+ watch faces are available at launch time, and more than 100+ other watch faces will be added gradually by the OTA upgrade.

100+ Sport Modes - A Trusted Fitness Partner

Haylou RS4 Plus has 105 Workout modes. It can record real-time exercise data, helping you track and improve your athletic performance.

Multi UI Main Menu According to Your Style

Haylou RS4 Plus has various kinds of UI operations: a cellular model and 360? unrestrained smooth sliding. Show personality and suit your style.

Smart Sleep Monitoring with Deep Sleep Recording Helper

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.

Smart SpO2 Tracking

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.* Monitoring data and results are for reference only, not diagnosis and treatment.

Smart 24-hour Heart Rate Monitoring

Haylou RS4 Plus can accurately detect your heart rate 24 hours a day and detect even slight change, welly knowing your every heartbeat.* Monitoring data and results are for reference only, not diagnosis and treatment.

All Day Stress Monitoring

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.

Female Menstrual Cycle Reminder

The menstrual period and the ovulation period can be recorded and can be more intimate reminding before coming.* The world premiere version does not have this function. It will be added gradually by the OTA upgrade. Monitoring data and results are for reference only, not as a basis for diagnosis and medical treatment.

IP68 Dustproof and Waterproof

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.

10-day Battery Life - No Need Recharging During Workdays

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.

• 10 days Typical usage
• 28 days Basic usage

* 10 days typical usage: All-day heart rate monitoring, sleep monitoring, call reminder twice a day, message reminder 100 times a day; wrist-lift to wake screen 150 times a day; exercise three times a week, run for 60 minutes each time; SpO2 tracking twice.