Haylou RS4 Smart Watch
Beauty on Your Wrist
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.

• 12 days’ Daily use mode
• 20 days’ Basic use mode

daily mode

heart rate monitoring sleep monitoring; Call reminder twice a day. Message reminder Eight times a day; wrist lift 150 times a day; Exercise twice a week and run for one hour each time.

Default mode

sleep monitoring default clock screen; Turn off the phone's Bluetooth connection, continuous heart rate monitoring, and other functions.

IP68 Waterproof

The Haylou RS4 watch is IP68 waterproof. There's no need to take the watch off when washing your hands, and you can easily deal with sweat during exercise or rainstorms when you're out and about.
* Meet the IP68 protection level requirements of the IEC 60529:2013 standard. It can meet daily waterproof needs and can be worn and used during exercise (exposed to sweat), rainy days and hand washing. Do not wear for swimming, showering, sauna, surfing and other high speed water activities. Damage caused by submersion of the device in liquid is not covered by the warranty if it is used in non operable conditions.

Blood Oxygen Testing

Drowsiness and fatigue after exercise or intense work is a sign of lack of oxygen in the body. Raise your wrist to test your blood oxygen levels and keep track of your health.
* The data and monitoring 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 changes, it is well aware of your every heartbeat.
* The data and monitoring results are for reference only, not for diagnosis.

Sleep Monitoring

The percentage of deep sleep is one of the important measures of sleep quality. Haylou RS4 actively monitors sleep time and position to help you develop good sleep habits.

Breathing Training

Perform guided breathing exercises with a specific rhythm to reduce stress anytime, anywhere and easily restore vitality.

1.78" AMOLED HD display

Alipay offline payment

10 days battery life

IP68 waterproof

SpO2 tracking

Heart rate monitoring

Sleep monitoring

New Look Whenever You Want

APP clock screens are updated continuously. Customize the watch face with your favorite images or even your own image.

12 Workout Modes

Haylou RS4 has 12 training modes. It can record training data in real time and help you track and improve your sports performance.