Xiaomi bracelet, as the most successful Xiaomi product, has sold more than 12 million pieces worldwide in 2015 by virtue of its high cost performance, making Huami Technology the second largest wearable device company in the world. Super long endurance, full waterproof design, practical and easy-to-use basic functions, whether it is the basic version of millet bracelet or heart rate version of millet bracelet, are very popular with consumers. If there is anything missing from the first generation of Xiaomi bracelet, it may be a screen that can check time and other information. A few days ago, Xiaomi finally released a new generation of Xiaomi bracelet, Xiaomi bracelet 2, with an OLED screen. This belated upgrade was welcomed by the author. Finally, we can say goodbye to the sad history of wearing watches and bracelets in one hand.

The packaging of millet bracelet generation 2 has not changed at all. It is packed in a very tough kraft cardboard box, even though the size is almost the same. The product parameters are always placed on the back of the box. The biggest difference from the first generation is the addition of an OLED screen. The battery capacity of the bracelet has increased from 45mAh to 70mAh. As for the endurance performance, it will be mentioned later.

Open the outer package cover, and the product comes into view. The first impression is that the main body is slightly larger than the first generation, the front is also made of glass instead of metal, and a round button is added. The pattern of the box is basically the same as that of the first generation. The black wrist strap and charging line are placed on the lower layer of the package.

The charging design is basically the same as that of the first generation, and 2-point contact charging is adopted. In the early days of the first generation, due to a design defect, the contact could not be concave occasionally. When charging, the contact was not good, and the charging could not be carried out. I hope that this aspect of the second generation can be improved.

The front of the main body of the bracelet has abandoned the metal design of the previous generation. The integrated black panel is made of excellent double material injection molding and UV coating process. The mirror effect makes the bracelet 2 look high-end and beautiful. However, in the actual use process, it will still attract fingerprints, and it is easy to leave scratches. The round metal touch button at the bottom is made of 0.05mm CD grain and anodizing process, which is very generous in design.

The back of the main body is still equipped with a photoelectric heart rate sensor, which is a very practical function for sports lovers, especially runners, and can freely plan the exercise time and amount according to the heart rate.

On the whole, the design of the main body of Xiaomi bracelet 2 is very similar to that of the first generation. The design of the integrated black version is more high-end than the metal aluminum texture. The size is slightly larger than that of the first generation, but it basically maintains a compact design. Of course, if it can be slightly flat, it may be more comfortable to wear.

As for the wrist strap, it still adopts the same technology as the first generation, and is also comfortable to wear. However, the ring buckle processing is slightly different. The process of the ring buckle should be the same as the touch button on the main body. The black metal wire drawing processing also makes the metal buckle not as thick as the first generation, which makes it easier to buckle.

The biggest change of Xiaomi bracelet 2 is the addition of an OLED screen, which supports the display of time, steps, heart rate and other basic information. In addition, mileage, heat, and residual power can be set and displayed through Xiaomi Sports APP. At the same time, it supports wrist lift display, which can replace the role of watches to a certain extent.

The area of the bracelet screen is not very large, and it can only display simple numbers and graphics. When there is a call, the bracelet will display an icon+vibration reminder, but the screen will not display the phone number or the name of the phone book, and the phone can not be controlled to answer or reject a call, which is really uncomfortable.

Xiaomi Bracelet 2 still supports IP67 waterproof and dust-proof, so it is unnecessary to take it off when bathing and swimming, maintaining the excellent quality of "put it on and forget it" before.

The addition of the screen has significantly reduced the dependence of the bracelet on the mobile phone. After the binding is set, in addition to occasionally checking your sleep quality, or when you need to upgrade your hardware, most data can be viewed only through the bracelet screen, which is really much more convenient than the Xiaomi bracelet generation.

Compared with the millet bracelet generation, millet bracelet 2 has upgraded the motion step counting algorithm based on a new hardware platform, effectively filtering the high-frequency activities without movement, greatly improving the accuracy of step counting, and making the daily step measurement data more accurate.

Motion counting, sleep monitoring, long sitting reminder, heart rate monitoring (real-time monitoring), call reminder, screen unlocking (Android system), vibrating alarm clock and secret free payment are still available, and seven kinds of reminder functions, including call, SMS, long sitting, alarm clock, APP notification (WeChat, etc.), email and movement standard, are also available.

The function of heart rate detection has been added from the previous generation of bracelets with minor changes. This function is very useful for fitness users. You can freely plan the exercise time and amount according to the heart rate. At the same time, Xiaomi bracelet 2 also adds heart rate assisted sleep monitoring, which can improve the accuracy of sleep monitoring. However, the opening of this function will reduce the endurance.

The previous generation of Xiaomi bracelet is popular among users with its super long endurance, which is also the main reason why Xiaomi bracelet is popular. Although the Xiaomi bracelet 2 has increased the battery capacity, the addition of the screen is bound to affect the endurance performance. After a period of use, the author has turned on the wrist flip light screen, heart rate assisted sleep monitoring, and various reminders. After a week of use, 65% of the battery is left. According to the endurance, the full charge can be used for about 20 days, which is almost the same as the official website data, and the endurance is almost the same as the optical version.

In a word, the launch of Xiaomi bracelet 2 makes up for the shortcomings of Xiaomi bracelet generation 1. It adds an OLED screen, while retaining the advantages of Xiaomi bracelet, such as comfortable wearing, strong endurance, practical functions and high cost performance. However, it is said that the production of Xiaomi bracelet 2 is very difficult, which leads to unprecedented difficulties in climbing the production capacity, making Huami Technology a top priority. More than a month after its release, it is still hard to find a single machine. The price is 149 yuan, and it is said that the price of scalper feel has reached more than 220 yuan. Those who want to get started need to wait patiently for the rush purchase every week.