color | Blue, Silver |
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HAYLOU RS4 MAX
Maximize
Life’s Moments
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
Polished
Matte
Color
Midnight Blue
Starlight Silver
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.
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
Exquisite Metallic Bezel
Discover the Haylou RS4 Max’s sleek all-metal frame and brilliantly polished bezel for a refined, high-quality appearance.
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
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.
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.
More Practical Features
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
Charging cable x1
User manual x 1
Photo
Specification
Product name
Haylou RS4 Max
Dimensions
48.3x39x11.4mm
Working temperature
-10 – 45°C
Resolution
320x380px
Colors
Midnight Blue, Starlight Silver
Bluetooth
V5.3
Water-resistance grade
IP68
Battery life
9 days (24/7 heart rate monitoring)
Display
1.91-inch LCD display
Synced data platform
Haylou Fun
Battery
270mAh
Supported devices
Android 6.0 and above, iOS 9.0 and above
* The above parameters are measured manually, and a 3-5mm difference is normal.
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