Choosing smart scales for the home often turns into a confusing quest, especially when it comes to Xiaomi products. At first glance, the Mi Body Composition Scale and Smart Scale 2 models seem almost identical: a white glossy body, hidden body. LED-But when you look at the specifications in detail, it's clear that we have different generations of devices with fundamentally different body analysis capabilities.
The main confusion arises from the similarity of external form factors and marketing names, which are often used by sellers interchangeably. The key difference lies in the number of parameters measured and the technology of data transfer. If you plan to seriously monitor the progress of sports or diet, understanding these differences will be a critical factor in buying.
In this article, we will explore why the newer Smart Scale 2 (XMTZC05HM) is considered the standard for bioimpedance analysis, while its predecessor, the Mi Body Composition Scale (XMTZC01HM), is a thing of the past.
Technical characteristics and generation of devices
The first thing to look at is the model designation on the bottom of the device, the older version, known as the Mi Body Composition Scale, is code-marked XMTZC01HM. It's the first generation device that laid the foundation for the Chinese giant's smart scales. It uses a basic fat mass calculation algorithm based on height, age and gender data entered manually by the user.
The more modern version of Smart Scale 2 (XMTZC05HM) represents an evolution of the idea, where engineers have implemented a highly accurate manganese steel sensor and improved calculation algorithms. The main technical advantage of the new model is the ability to measure not only weight and BMI, but also detailed analysis of body composition, including muscle and bone mass, visceral fat and protein mass.
⚠️ Attention: Externally, the devices are almost no different, so when buying from hand or on marketplaces, be sure to check the model marking at the bottom of the scales. XMTZC01HM new XMTZC05HM It will deprive you of access to advanced analytics.
The difference in hardware also affects response speed. Smart Scale 2 stabilizes readings faster and has a more energy-efficient Bluetooth 4.2 module that provides stable synchronization with a smartphone. The older model can think longer before fixing weight, especially if the batteries are not first fresh.
Functionality and measurable parameters
The most significant difference between the models is the number of parameters they can calculate: the basic Mi Body Composition Scale is limited to measuring weight, BMI, and the approximate percentage of body fat, which are often estimates and can be inaccurate because the device uses a simplified formula.
In turn, Smart Scale 2 offers a full bioimpedance analysis, providing data on 11 body parameters, including muscle mass percentage, bone mass percentage, protein level, basic metabolism, visceral fat and even an estimate of physical age, which turns the scale from a simple measuring device into a tool for professional health monitoring.
For figure-watchers, the ability to track muscle dynamics is crucial: The old model doesn’t differentiate between muscle or water weight loss, while the new model gives a more transparent picture of changes in the body.
Why is visceral fat important?
Measurement accuracy and weighing technology
Accuracy is a parameter that is often ignored before purchase. The Smart Scale 2 uses a highly accurate manganese steel pressure sensor that can record weight changes in increments of up to 50 grams, allowing even minimal fluctuations in body weight, which is especially important for people on a strict diet or drying regime.
The old Mi Body Composition Scale also claims high accuracy, but in practice users often find large discrepancies in readings when weighed again, due to less sophisticated calibration of sensors and noise filtering algorithms, and better at measuring the weight of light objects such as laptops or grocery bags, thanks to the weighing mode of small objects.
The important thing is the stability of the readings. If you stand on the scale, get off and get up again in a minute, Smart Scale. 2 It's more likely to show the same result. In the old model, the scatter can be as high as the 100-200 This is a gram that causes chaos in statistics.
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For maximum accuracy, weigh at the same time of day, preferably on an empty stomach in the morning and after using the toilet. Put the scales only on a solid flat surface, avoiding carpets and soft-backed linoleum.
Comparative Characteristics Table
To organize the information, it is useful to look at the numbers, and the following table illustrates the gap in functionality between the two generations of devices.
| Characteristics | Mi Body Composition Scale (XMTZC01HM) | Smart Scale 2 (XMTZC05HM) |
|---|---|---|
| Number of measured parameters | Weight, BMI, % fat (baseline) | 11 parameters (muscles, bones, protein, visceral fat, etc.) |
| Sensor material | Standard sensor | High-precision sensor made of manganese steel |
| Accuracy of measurements | ±100 g (stated), higher error | ±50 g, high stability |
| Weighing regime of goods | There is (mode for small items) | |
| Balancing | Automatic (basic) | Automatic (improved) |
The table shows that the Smart Scale 2 is a winner on all technical parameters. The price difference between the models is currently minimal, making buying an outdated version economically impractical unless you found it significantly cheaper.
Compatibility with applications and ecosystem
Both scales work in conjunction with the Mi Fit mobile app, which is recently underwent rebranded and now called Zepp Life. The connection process is identical: you need to remove the protective film from the battery compartment, start the application and follow the instructions on the screen. Libra is automatically determined via Bluetooth.
However, the interface of the display of data in the application will be different. For Smart Scale 2, a full dashboard is available, where each of the 11 parameters is displayed as a separate graph with the dynamics of changes. For the old Mi Body Composition Scale model, many fields will be empty or show calculated (theoretical) values, rather than real measurements.
☑️ Pre-purchase check
Also worth noting is integration with other services. Smart Scale 2 syncs better with Google Fit and Apple Health, transferring an expanded dataset to it, which allows you to use information about weight and body composition in third-party apps for calorie tracking or workouts.
⚠️ Note: When you first set up, be sure to enter the correct height and birth date data. Bioimpedance analysis in Smart Scale 2 is based on this data, and an error in it will lead to incorrect calculation of all derivative parameters.
Design, Materials and Autonomy
Visually, both devices are made in the corporate style of Xiaomi: tempered glass, aluminum alloy and hidden LED-It's a display that only lights up when weighed, and the surface of the glass is matte, anti-slip treatment, which ensures that even wet feet are safe to use after showering.
Despite the similarity, the build quality of the Smart Scale 2 is felt slightly higher, the gaps between the body and the platform are minimal, and the legs are rubberized more efficiently, which prevents sliding on the tile. The scales can withstand a load of up to 150 kg, but it is recommended not to exceed the limit values to maintain the accuracy of the sensors.
As for power, both models are powered by 4 AAA batteries. Thanks to the optimized Bluetooth algorithm and deep sleep mode, one set of batteries is enough for 6-12 months of active use by a family of 3-4 people.
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Purchase of Smart Scale 2 (XMTZC05HM) is a more rational investment due to the enhanced functionality and high accuracy of measurements, despite the fact that the price is almost equal to the old model.
Final comparison and selection recommendations
To sum up, it’s safe to say that the Mi Body Composition Scale (XMTZC01HM) is a thing of the past, a device that has fallen victim to its own success, spawning a more perfect successor. Smart Scale 2 offers not just cosmetic improvements, but a qualitative leap in the accuracy and depth of data analysis.
If you're choosing scales for the whole family, where it's important to monitor the fitness of children and adults, or for yourself, if you're exercising, the choice is clear. Advanced statistics help you better understand your body's responses to changes in diet and exercise. The old model is only suitable for basic weight control without going into detail.
New models such as the Mi Body Composition Scale S400 have also hit the market, but the Smart Scale 2 remains the middle ground in terms of price-performance.It has been time-tested, has a huge user base and stable software.