Haylou RS4Plus-Black 4.52 cm (1.78) AMOLED Digital 368 x 448 pixels Touchscreen (RS4PLUS-BLACK)

- 1.78" AMOLED Display
- & 60Hz Refresh Rate
- Haylou RS4 Plus 1.78" AMOLED Display

- Haylou RS4 Plus Magnetic Strap
- All-Day Heart Rate Tracking
- SpO2 and Temperature Monitoring
- Haylou RS4 Plus IP68 Waterproof
- HD Retina Grade AMOLED Display

With 368*448 pixels of 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 rare for round smartwatches currently available.

- 368*448
- Pixels
- 1.78-inch
- AMOLED Display
- 6ceHz
- Refresh Rate

Haylou RS4 Plus HD Retina Grade AMOLED Display
Magnetic Strap is Comfortable to Wear
It can be quickly detached and is comfortable to wear and remove. Suitable for people worried about buckle issues or wrist size mismatches.

- Haylou RS4 Plus Black Magnetic Strap
- Haylou RS4 Plus Watch Faces
- 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+
- 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.
Three types of UI for Haylou RS4 Plus

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.

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.

Haylou RS4 Plus SpO2 screen
Smart SpO2 Tracking
Sleepiness and fatigue after high-intensity exercise or work can be caused by 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 changes, knowing your every heartbeat well.

All Day Stress Monitoring
The Haylou RS4 Plus can monitor your stress 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, providing more intimate reminders before they arrive.

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 for Recharging During Workdays
Haylou RS4 Plus packs super-powerful features into its slim body, yet still has enough endurance to last for up to 10 days from a single full charge with typical usage.

Typical usage: 28 days
Haylou RS4 Plus - 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