HAYLOU RS4 MAX

Maximize
Life's Moments

9 Compelling Reasons to?Consider

1.91" Colorful HD display

Vivid color and expansive view

Safe off-wrist lock

Safeguard your privacy

Detailed sleep monitoring

Enhance sleep quality

Online/customized watch faces

Over 100 stylish watch faces

Bluetooth phone call

IP68 waterproof

Magnetic strap

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.

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 Plus

Haylou RS4

Surface process

Polished

Matte

Color

Midnight Blue
Starlight Silver

All Black/Silver

Black/Silver

Size

1.91 in.

1.78 in.

Bluetooth phone?call

Support

Not support

Workout modes

127

105

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

Battery life

9 days

10 days

Material

Metal & multi-color magnetic strap (silicone strap sold separately)

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

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

Easy to slip on

Built-in magnet

Perfect fit

Wave-pattern design

Breathable and supple

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.

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

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

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.

Stress test

Keep tabs on mental states.

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.

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.

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

Photo

HAYLOU RS4 MAX

HAYLOU RS4 MAX

HAYLOU RS4 MAX

9 Compelling Reasons to?Consider

Vivid & User-Friendly Display

Seamless Bluetooth Calls

RS4 Series Overview

Smart Off-Wrist Security

Ultimate Wearing Comfort

Exquisite Metallic Bezel

Custom Watch Faces

127 Workout Modes

Reliable Health Tracking

Detailed Sleep Monitoring

Monitor different stages of?sleep

Female health management

Standout Water Resistance

Robust Battery Life

More Practical Features

HAYLOU RS4 Max Function Reference

Packing List

Photo

HAYLOU RS4 Max
Function Reference