HD Retina Grade AMOLED Display
The Haylou RS4 Plus with a 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.
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 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.
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.
Water and dust resistance were tested under controlled lab conditions. Resistance may fail due to wear and tear or over time. Damage caused by immersion in liquid is not covered by warranty
Technical Specifications
Product name
Haylou RS4 Plus
Bluetooth version
Bluetooth 5.1
Supported devices
Android 6.0 or iOS 11.0 and above
Dimensions
45.2*37.2*10.4mm
Strap width
20mm
Weight
57.6g (with strap)
Display
1.78″ AMOLED display
Resolution
368x448px
Sensors
Heart rate sensor, motion sensor, SpO2 sensor
Battery capacity
230mAh
Battery life
About 10 days (Turn on heart rate monitoring for 24 hours)
Water-resistance grade
IP68
Operating temperature
0°C~45°C
Sync data platform
Haylou Fun
Workout modes
105 modes
LKR 151.14 X 3 
