• 1.78” AMOLED display
• 60Hz Refresh Rate
• 100+ Online Watch Faces
• 105 workout modes
• Offline payment
• SpO₂ tracking
• All-day heart rate monitoring
• Automatic sleep monitoring
• All Day Stress Monitoring
• Up to 28-day battery life
• Magnetic strap

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.

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+ 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 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.

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.

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.

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.