Haylou RS4 Review: A Smartwatch with Big AMOLED Screen

Xiaomi recently launched the Haylou RS4 smartwatch with a large 1.7-inch AMOLED screen with 368 x 448pixels resolution. However, a full Haylou RS4 review can reveal all the pros and cons of this latest Apple lookalike watch. Also, the Xiaomi Haylou brand claims it is highly responsive and has the latest health management functions. So, there is SpO2, blood pressure, sleep monitoring, heart rate monitor, and other health features. What else does this new smart watch from the Haylou official store offer? Let us find out more about it.

Haylou RS4 Review Haylou RS4 LS12 Xiaomi Haylou RS4 Xiaomi Haylou Haylou RS4 smartwatch Haylou official store

The Haylou RS4 Review

A quick review of the features this new Xiaomi Haylou smartwatch offers at a budget-friendly price. There is a 1.7-inch large-size AMOLED display with high brightness and vivid colors. Also, the Haylou RS4 review will discuss the design and display quality in detail later. The Haylou RS4 LS12 smartwatch has 12 Sports Modes, Custom Watch Face, IP68 waterproof rating, 10-day battery life, Blood Oxygen, 24/7 heart rate, and sleep monitoring. These were the summarized specs and now let us explore each in more detail and find what’s hot and what’s not.

Haylou RS4 review Haylou RS4 LS12 Xiaomi Haylou RS4 Xiaomi Haylou Haylou RS4 smartwatch Haylou official store

Haylou RS4 Review Haylou RS4 LS12 Xiaomi Haylou RS4 Xiaomi Haylou Haylou RS4 smartwatch Haylou official store

Haylou RS4 LS12 Smartwatch Design

It has a 1.7-inch big rectangular screen with a single side button like the Apple watch. However, you can only use the side button to light up the screen or turn on/off the watch. The Haylou RS4 review for its display shows that swiping up and down the screen navigates the functions and features. Also, there is no double-tap function for waking up the screen. This latest Haylou RS4 smartwatch has a 45.2×37.2×11.1mm dimension size for the screen and weighs around 48.6 grams. Press and hold open the power menu when using the side button. There is again Apple watch-like strap buckle with built-in space.

Xiaomi Haylou RS4 Menu, Navigation, and Everyday Use

There are many features that this Haylou RS4 LS12 watch does not have. GPS, Always-On Display, and Voice Assistant are among these. For GPS and route tracking, it uses the smartphone’s GPS via Haylou Fun App. Using it every day is simple using the touch screen navigation and the side button. However, you can not set a double-tap to turn on the screen for the side button. Something that the Xiaomi Haylou brand should look into. Twisting the wrist to turn on the screen automatically is present, though.

The Haylou RS4 review shows the same menu used for smartwatches like Xiaomi Mibro Lite. Sports Mode in a list view, Main Menu in an icons list view, and health features as app-like view. The watch is IP68 waterproof for everyday workout sessions or rainy weather use.

Haylou RS4 LS12
GPS Route Tracking Via Smartphone App

Sports Modes, Health Tracking, and Other Features

The Haylou RS4 LS12 has 12 workout modes with health tracking and GPS route mapping using the Haylou Fun App. This budget Xiaomi Haylou smart watch has 24/7 heart rate sensor with blood oxygen analysis. It is as accurate as it can be for any smartwatch. Also, the Haylou RS4 review for sleep monitering and slight heart rate changes shows good enough results. There is also breathing exercise, sedentary reminders, Facebook, and other smartphone notifications. The workout modes include yoga, walking, running, cycling, climbing, free training, spinning, basketball, rowing, and others.

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Comparing the health tracking results with a pulse oximeter show close enough results. Therefore, the heart rate and blood oxygen monitor work almost accurately. Moreover, there are many settings for the Haylou RS4 smartwatch provided in the smartphone app. You can see all the health data, sleep data, and settings menu. There is Bluetooth 5.1 that connects instantly with any phone. However, the screen time is only up to 15 seconds and not more. You can change the watch dials or customize a watch face using the Haylou Fun app. The Haylou RS4 LS12 smartwatch also allows you to change notifications, sedentary reminders, or other settings via the app.

There are a total of six watch faces that you can use at a time For the RS4 watch. However, you can download and change up to 28 watch dials using the smartphone app. A customizable watch face is also available. Other features of this Xiaomi Haylou watch are barometer, brightness adjustment, Google Fit app support, and 230mAh battery.

Spec Sheet

Bluetooth: V5.1, Android & IOS compatible
Waterproof: IP68
Sports Mode: 12 Workout Modes
Display: 1.78-inch AMOLED 368 x 448pixels

Heart rate Sensor, G Sensor, SpO2

Battery: 230mAh


  • 1.7-inch large-size AMOLED screen with vivid colors and high resolution.
  • 12 Sports Modes.
  • Almost accurate 24/7 heart rate monitering.
  • SpO2(Blood Oxygen) monitor.
  • Deep Sleep tracking.
  • 28 watch dials plus custom watch face via Haylou Fun app.
  • Budget-friendly pricing.
  • Smartphone notifications with various settings via smartphone app.
  • Google Fit app support.
  • 10-day battery life.


  • No GPS built-in, only smartphone GPS usage.
  • There is no Always-On display.
  • Side button for turning screen on/off.
  • There is no double tap to turn on the screen.

Whats in the box? manual and USB cable

The Verdict

The Haylou RS4 review shows that this latest Apple lookalike smartwatch at a budget-friendly price offers accurate health tracking plus a large-size AMOLED screen. However, it has no GPS built-in. Only it uses the smartphone for tracking routes and maps. Also, it has 12 Sports Modes, a 10-day battery, blood oxygen, and sleep monitoring. Not a feature-rich smartwatch from Xiaomi Haylou, but it provides all the basic features. So, if you want a better health monitoring watch with a big screen at an affordable price, it can be a better choice.

XiaomiToday Rating: 3.8/5

Price: $49.60

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