Haylou RS4 LS12 Smart Watch


Device RS4
Shape Rectangular
Dimension 45.2*37.2*11.1mm
Weight 48.6g
Colors Black
Display IPS
Screen Size 1.78 Inch
Screen Resolution 368 x 448pixels
Compatible Os Android & IOS


Exactly What You Want

12 workout modes / 1.78″ AMOLED HD display / Customized Watch Face / 10 days battery life

IP68 waterproof / SpO2 tracking / Heart rate monitoring / Sleep monitoring




1.78″ AMOLED HD display brings an unprecedented clearness in details with lower power consumption and faster response speed, making every screen-on stunning to look at.

-368*448 resolution

Ultra-high resolution and faster response speed

-Large-size screen

Clear and stunning

-AMOL ED HD display

Delicate and fine textured


Creative Strap Design

The Lightweight metal bezel is designed with a technological aesthetic. And the upgraded silicòne strap is skin-friendly and breathable for a long time wearing.

-Exquisite metal bezel

Gorgeous looking

-48.6g lightweight design

Slim and pressure-free

-Creative design without a hoop

Stylish and easy to wear


New Look Whenever You Want

The APP watch faces are constantly updated. Customize the watch face with images of your choice, or even your own personal picture.



Blood Oxygen Testing

Sleepiness and fatigue after high-intensity exercise or work is a sign of insufficient oxygen in the body. Raise your wrist to test your blood oxygen level and keep your health under control.

* Monitoring data and results are for reference only, not for diagnosis.


Heart Rate Monitoring

Haylou RS4 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 for diagnosis.


Sleep Monitoring

The percentage of deep sleep is an important criterion of sleep quality. Haylou RS4 actively monitors sleep time and status to help you develop good sleep habits.


Breathing Training

Perform guided breathing exercises at a set rhythm to alleviate stress anytime and anywhere, easily restoring vitality.



12 Workout Modes

Haylou RS4 has 12 workout modes. It can record real-time exercise data, helping you track and improve your athletic performance.

-Go wild and break boundaries

Cycling / Climbing / Fast walking / Outdoor running

-Sweat and keep fit

Spinning / Indoor running / Yoga / Free training

-Burn youth and record love

Basketball / Football / Rowing / Gymnastics


Active Tracking of Activities

With a built-in high-precision motion sensor, Haylou RS4 can actively record your daily exercise behavior. Set your goals and strive to realize them.


The watch knows how far you have gone.


Every step counts check in with small goals.


Monitor calories burnt for scientific body management.

-Sedentary reminder

A timely reminder for a break so you can combine work and rest.



Alipay Offline Payment

The watch supports Alipay offline payment. Forget to take your phone and wallet? Swipe left on the homepage to enter the scanning code page, raise your wrist to make the payment.


10 Days Battery Life

Battery life can last up to 10 days in daily use mode, and it can be used for about 25 days in basic use mode, saving the trouble of daily charging.

-10 days Daily use mode

-25 days Basic use mode

* Daily mode: heart rate monitoring; sleep monitoring; call reminders twice a day; message reminders 8 times a day; wrist-lift 150 times a day; exercise twice a week, run for 60 minutes each time.

* Basic mode: default watch face; sleep monitoring; turn off phone Bluetooth connection, continuous heart rate monitoring, and other functions.


Real-time Message Reminder

Connect to mobile phone via Bluetooth. Calls, WeChat, and various APP information can be synchronized with the watch in real-time so that you don’t miss every important moment.


IP68 Waterproof

The Haylou RS4 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.

* Meet the requirements of IP68 protection level of IEC 60529:2013 standard. It can meet daily waterproof needs and be worn and used during workouts (can be exposed to sweat), rainy days, and handwashing; do not wear for swim, shower, sauna, surfing, and other high-speed water activities. Damage caused by immersing the device in liquid when used in an inapplicable scenario is not covered by the warranty.


More Practical Functions

Haylou RS4 is a small assistant on your wrist.

More practical functions to make smart life more comfortable.

-Time function

Alarm, stopwatch, timer.

-Weather notification

Weather forecast for the next 3 days.

-Music control

Play, pause, skip a track.

-Find phone

Ring to find location.


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