HAYLOU RS4 MAX

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Haylou RS4 Max

9 Compelling Reasons to Consider

1.91" Colorful HD display
Vivid color and expansive view
Haylou RS4 Max 1.91" Colorful HD display
Safe off-wrist lock
Safeguard your privacy
Haylou RS4 Max Safe lock screen
Detailed sleep monitoring
Enhance sleep quality
Online/customized watch faces
Over 100 stylish watch faces
Haylou RS4 Max Many watch faces
Bluetooth phone call
Haylou RS4 Max Bluetooth call screen
IP68 waterproof
IP68 logo
Magnetic strap
Two magnetic straps
All-day health management
Detailed sleep monitoring
Enhance sleep quality

Vivid & User-Friendly Display

Haylou RS4 Max has a 1.91-inch HD screen, nearly 8% larger than that of RS4 Plus, offers a superior screen-to-body ratio, and delivers an unparalleled visual experience.
* Based on results from Haylou's internal lab tests. Actual usage may vary depending on settings, operation, and environmental factors.
Haylou RS4 Max with green watch face
Haylou RS4 Max Inner structure

Seamless Bluetooth Calls

Haylou RS4 Max is equipped with the latest Bluetooth 5.3 chip. This watch ensures stable connectivity for hassle-free call-making and receiving.

RS4 Series Overview

Find the Perfect RS4 for You
Haylou RS4 Max
Haylou RS4 Max two smart watches
Haylou RS4 Plus
Haylou RS4 Plus two smart watches
Haylou RS4
Haylou RS4 two smart watches
Surface process
Polished
Polished
Matte
Color
Midnight Blue
Starlight Silver
All Black/Silver
Black/Silver
Size
1.91 in.
1.78 in.
1.78 in.
Bluetooth phone call
Support
Not support
Not support
Workout modes
127
105
12
Health monitoring function
Heart rate, blood oxygen, stress, sleep, female health, liveness detection,REM, sporadic nap
Heart rate, blood oxygen, stress, sleep, female health
Heart rate, blood oxygen, stress, sleep
Waterproof rating
IP68
IP68
IP68
Battery life
9 days
10 days
10 days
Material
Metal & multi-color magnetic strap (silicone strap sold separately)
Metal & magnetic strap
Metal & magnetic strap

Smart Off-Wrist Security

The clever off-wrist lock feature automatically detects when you're not wearing it and secures the screen, ensuring your privacy is always protected.
Two Haylou RS4 Max smart watches with safe lock screen
Haylou RS4 Max on a woman's wrist

Ultimate Wearing Comfort

Experience unparalleled comfort with the Haylou RS4 Max's magnetic loop, designed for effortless wearability. Its built-in magnet ensures a perfect fit every time, adapting seamlessly to your wrist.
Magnetic loop on silicon strap
Magnetic loop
Easy to slip on
Silicon strap built-in magnet
Built-in magnet
Perfect fit
Silicon strap wave-pattern design
Wave-pattern design
Breathable and supple
Silicon strap multi-color options
Versatile multi-color options
Vibrant and trendy
Haylou RS4 Max's metalic bezel left side

Exquisite Metallic Bezel

Discover the Haylou RS4 Max's sleek all-metal frame and brilliantly polished bezel for a refined, high-quality appearance.
Haylou RS4 Max's metalic bezel right side

Custom Watch Faces

Sporty, techy, minimalist, or fun cartoon - pick your style. Transform your photo album or opt for dynamic watch faces. Just lift your wrist and stand out from the crowd.
Haylou RS4 Max Many watch faces

127 Workout Modes

Choose from 127 workout modes tailored to your favorite activities. The Haylou RS4 Max smartwatch provides scientific guidance, precise workout tracking, and more.
127 Workout Modes
Tennis player wears Haylou RS4 Max

Reliable Health Tracking

Get accurate health data through the newly added liveness detection and blood oxygen tracking functions.
*The test data and results are for reference only, not for diagnosis and treatment.
Continuous heart rate monitoring
Two Haylou RS4 Max with health tracking screens
All-day SpO2 tracking
Woman with pillow wears Haylou RS4 Max

Detailed Sleep Monitoring

Gain comprehensive insights into your sleep patterns with the Haylou RS4 Max. It offers detailed sleep monitoring, giving you a complete picture of your sleep quality, including stages and duration.

Monitor different stages of sleep

Deep sleep, light sleep, awake stages, REM, and sporadic naps.
* Monitoring data and results are for reference only and are not for diagnosis and treatment.
Haylou RS4 Max next to smartphone with sleep tracking screen

Female health management

The Haylou RS4 Max smartwatch includes a thoughtful feature for female health management. It allows users to record and accurately predict menstrual cycles, providing valuable insights for better understanding and managing one's health.
Haylou RS4 Max Female health screen
Haylou RS4 Max Stress test screen
Stress test
Keep tabs on mental states.
Haylou RS4 Max Breathing exercises screen
Breathing exercises
Relax the body and mind.

Standout Water Resistance

The Haylou RS4 Max boasts an IP68 waterproof rating, providing peace of mind for your daily activities. Whether breaking a sweat during workouts or being caught in a downpour, your watch is up to the challenge.
* Designed for daily waterproof needs, suitable for workouts, rainy days, and hand washing. Not suitable for swimming, showering, saunas, surfing, or high-speed water activities. The warranty does not cover damage caused by improper liquid exposure.
Haylou RS4 Max in a water drops

Robust Battery Life

Low power consumption system provides 9 days of battery life on a full charge and 14 days in extended battery life mode.
Haylou RS4 Max Charging screen
9 days
Daily usage mode
14 days
Basic usage mode
Daily mode: connected to the phone via Bluetooth; default 50% brightness; 24-hour heart rate monitoring; SpO2 tracking twice a day; sleep monitoring; exercise three times a week (30 minutes each time); raise-to-wake 150 times a day (5s each time); 100 message notifications a day.

Basic mode: Phone Bluetooth connection, continuous heart rate monitoring, and other functions turned off; only raise-to-wake 150 times daily (5s each time).

More Practical Features

Music control
Alarm
Bluetooth phone call
Stopwatch
APP messages
Calculator
Weather
Countdown
Medication reminder
Water intake reminder
Sedentary reminder

HAYLOU RS4 Max
Function Reference

Feature Category
Specific Features
Available
Health
Sleep monitoring
Support
Heart rate monitoring
Support
SpO2 tracking
Support
Female health
Support
Stress test
Support
Breathing exercises
Support
Notification
Sedentary reminder
Support
Message notification
Support
Water intake reminder
Support
Medication reminder
Support
Heart rate alert
Support
Low battery alert
Support
Workout
127 modes
Support
Automatic workout pause detection
Support
Workout energy consumption
Support
Bluetooth phone call
Make/receive calls
Support
Incoming call reminder
Support
Payment
Alipay offline payment
Not support
Other features
Mobile phone music control
Support
View mode
Thumbnail, waterfall, list, nine-square grid view
Customized watch faces
Support
Weather
Support
Alarm clock
Support
Timer
Support
Stopwatch
Support
Calendar
Support
Calculator
Support
Off-wrist lock
Support
Find phone
Support
Do-Not-Disturb mode
Support
Charging state
Support
Raise-to-wake screen
Support
Set the brightness
Support
Power on/off
Support

Packing List

Haylou RS4 Max smartwatch x1
Charging cable x1
User manual x 1
Haylou RS4 Max What's in the box

Photo

Haylou RS4 Max Starlight Silver color
Haylou RS4 Max Midnight Blue color

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