Smart Watch
      
      
       Beauty on Your Wrist
      
      
     
    
    
    
   
    
     
      Exactly What You Want
     
     
      
       
        12 workout modes
       
       
       
      
       
        1.78" AMOLED HD display
       
       
       
      
       
        Alipay offline payment
       
       
       
      
       
        10 days battery life
       
       
       
      
       
        IP68 waterproof
       
       
       
      
       
        SpO2 tracking
       
       
       
      
       
        Heart rate monitoring
       
       
       
      
       
        Sleep monitoring
       
       
       
      
     
    
   
    
     
      Design
     
    
    
     
      
       Compact Body
       
       HD Large Display
      
      
       Haylou RS4 is specially made for sports. Easily check information with the 1.78" large touch control display.
      
      
       
        368*448 resolution
       
       
        Ultra-high resolution and faster response speed
       
       
      
       
        Large-size screen
       
       
        Clear and stunning
       
       
      
       
        AMOLED HD display
       
       
        Delicate and fine-textured
       
       
      
     
     
    
     
     
      
       Creative Strap Design
      
      
       The lightweight metal bezel is designed with a technological aesthetic. And the upgraded silicone 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 picture.
      
      
     
     
    
   
    
     
      Health
     
    
    
     
     
      
       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.
      
      
     
     
    
   
    
     
      Workout
     
    
    
     
     
      
       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
         
         
        
       
      
       
        Go wild and break boundaries
       
       
        
         
         
          Spinning
         
         
        
         
         
          Indoor running
         
         
        
         
         
          Yoga
         
         
        
         
         
          Free training
         
         
        
       
      
       
        Go wild and break boundaries
       
       
        
         
         
          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.
      
      
       
       
        
         Distance
        
        
         The watch knows how far you have gone.
        
        
       
      
       
       
        
         Steps
        
        
         Every step counts check in with small goals.
        
        
       
      
       
       
        
         Calories
        
        
         Monitor calories burnt for scientific body management.
        
        
       
      
       
       
        
         Sedentary reminder
        
        
         A timely reminder for a break so you can combine work and rest.
        
        
       
      
     
     
    
   
    
     
      Life
     
    
    
     
     
      
       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.
      
      
      
       * 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.
       
       
      
     
    
   
   
    
     
      
       Parameters
      
     
     
     
      
      
       
        Bluetooth connection
       
       
        Bluetooth V5.1
       
       
      
       
        Main body size
       
       
        45.2*37.2*11.1mm
       
       
      
       
        Sensors
       
       
        Heart rate sensor, motion sensor, blood oxygen sensor
       
       
      
      
       
        Watch weight
       
       
        48.6g (with strap)
       
       
      
       
        Display
       
       
        1.78" AMOLED display
       
       
      
      
      
       
        Battery life
       
       
        About 12 days (24 hours heart rate monitoring)
       
       
      
       
        System requirement
       
       
        Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries.
       
       
      
     
    
   
    
     Liesheng Electronic Lab measured all the data above, and the actual use may be slightly different according to a specific situation.