There has always been the habit of wearing watches. This habit has been for more than 20 years. Now that the mobile phone is very powerful, it is easy to see the time, but I still wear a watch when I go out. Because if you want to take a look at the time, use a mobile phone, you need to do the following steps: take out the phone from your pocket, light up the screen, look at the time, then close the screen, and finally put in the pocket.
The above are just normal steps. What are the abnormal steps? Take your phone out of your pocket and light up the screen. Weibo someone @ I, go and see, after brushing for a long time Weibo, remember to go and see if there is any worthy hands, and then go to the circle of friends, after the transfer, put the phone into the pocket. Only then reacted. I just wanted to look at the time before! However, if this circle turns, it will not be able to stop for half an hour.
Watching time with a watch, you just need to lift your hand and turn your wrist. Even if you have something in both hands, it does not affect the time. More convenient than mobile phones, but these are only suitable for people who are used to wearing watches.
As a digital controller, it has always enjoyed digital products with a small number of functions. For the wristband, various sensors can be integrated in a smaller volume than the watch to achieve different functions, which is a must experience. So when the millet wristband was introduced, it entered one, but it was discovered after the start that most of the functions were inseparable from the mobile phone, and the bracelet could not be seen without the screen for a long time, so it took a few days to wear it. After that, he began to eat ash, and then gave it to his friends.
After experiencing the millet bracelet for the first time, I agree with the following statement: "Without a screen, the bracelet is a rogue." Xiaomi should also be aware of this problem. After the millet bracelet light version of the millet bracelet The 2nd generation finally added a screen. What about this bracelet? The following is announced.
This article directory:
First, open box and appearance
Second, wear experience and screen
Third, the function display
1, the time display
2, the number of steps
3, heart rate measurement
Fourth, APP experience
Fifth, endurance
Sixth, summary
Saying that the receipt of Aunt’s text message was still unexpected. After all, it was a 1 in 455 chance. Thanks to Auntie, I could choose to experience this Millet Bracelet 2 (although I would prefer to experience Ticwatch 2), I immediately confirmed it in the APP.
First, open box and appearance
This time still did not see the iconic tape, but the packaging is very good, reassuring.
Millet's packaging is also the same as the kraft paper box. It has a high degree of recognition.
Open the package and you can see the rice placed on the front
Open the lid to see that the accessories are placed below
It is said that this can remove rice without damage
The contents of the box, including rice, wristbands, cords, manuals
Let's look at the rice, the front is a mirror design, the lower circle is the touch area
On the back is an optical rhythm sensor and MI LOGO
Because millet bracelet 1 is not on hand, it can't compare with the size of the 1st generation, so watch it directly.
Let's look at wristbands, one-piece soft silicone material
Charging line, feeling a bit short
After fitting, the state of charging
The following is the instructions, how to get started, introduced in great detail
Combine it with the wristband, and you need to put the rice from the inside of the wristband.
Because of heart rhythm, the back is to be raised
For a lot of users of the 1st generation to report that rice grains are easy to fall off and lost, I intentionally put the wristbands into this shape, and the rice grains are still very firm, so personal feeling that the 2nd generation should not appear the situation that the rice grains are easy to fall off.
Second, wear experience and screen effects
The following is the first shot, my wrist circumference is about 18CM.
The hole in the middle of the hole is just right, not too tight, it will not be too loose and affect the detection of heart rate. After wearing a good angle to a
Although the 2nd generation rice grain is a little larger than the 1st generation, the wearing feeling still does not lose 1 generation. The overall feeling of wearing is not a feeling as a whole, because the whole is very light, it will be ignored after some time, and the wristband is also It is not too wide, and wearing it for a long time will not cause skin discomfort, sweat, and the like. So wearing a millet bracelet 2 to sleep is no problem, and if you want me to sleep with a normal watch, then I really can not sleep.
Because the heart rate sensor is raised, after the wearer wears a mark on the wrist, there is no discomfort.
The screen of the bracelet can feel good brightness in the room, but when it is outdoors, it will feel that the screen brightness is obviously not enough. The following is the effect in the outdoor sunshine:
This is an effect under the shade of an outdoor tree, slightly better than the above.
Third, the function display
Because the screen is added, the wristband can display more content. At present, a loop can be set on the wristband: time, steps, heart rate, mileage, heat consumption, and remaining power.
In addition to the first "display time" of these display items, other items can be displayed or not displayed in the APP. It is because of the screen that makes these functions less dependent on the phone.
In the use of these days, the most commonly used is the time, the number of steps and the heart rate, so the following are tested on these items.
1, the time display
Here is mainly to experience the bright wrist screen function, after the bracelet is added to the screen, the most important function is to look at the time, and above has been said, using ordinary watches to see the time, it is very simple, and the bracelet in order to save Electricity, so that the screen is always lit is not realistic, so the general with the screen of the wristband has a bright wrist lift or lift the wrist light screen. The specific implementation method is to raise the wrist or flip the wrist like the normal time when using ordinary watches to watch the time, so that the bracelet screen faces itself. At this time, when the wristband detects such an action, it will light up the screen and display the time.
As an algorithm for motion detection, it is directly related to the sensitivity of the bright screen. Here we look at the video to feel it.
Here is a typical test that can achieve 100% bright screen. In daily life, when you lift your wrist or turn your wrist to watch the time, the chance of the screen lighting is about 90%. However, there is one thing that needs to be tweaked, that is, delay. The above video can also be felt. After the wrists are turned over, the screen does not immediately light up. It takes 0.5 seconds or more before the light comes on. The experience is a little unpleasant. .
2, the number of steps
In the past few days of trials, Xiaomi's algorithm for the number of steps is very good, the following is actually tested. The first is the initial state, the number of steps is 3287.
After walking verbally for 300 steps, the number of steps is 3587, which is exactly 300 steps.
After 300 steps, the number of steps is 3884.
In this way, the error in the running state is 1%, and the performance is quite good.
The above is measured when the arm is normally oscillating when walking or running. The case of abnormal swing is also tested. There will be a small number of steps (around 5%). This should be a problem with the algorithm.
3, heart rate measurement
Value-for-money friends who want to exercise can monitor their heart rate in real time, so many people choose to use their heart rate with sports watches.
At present, the heart rate or wristband measures the principle of heart rate. The following content is from Baidu Encyclopedia:
The way we measure heart rate on spinning bikes, treadmills or elliptical machines usually requires that we use two hands to touch two contacts at the same time. This is the first measurement principle described above, which is measured by the cardiac current.
The millet bracelet 2 uses the second method, and uses the green light photoelectric measurement method.
And individuals think that these two methods of measurement have their merits. There is a pedometer wristwatch with a heart rate measurement function. The first method is used. When measuring, two fingers are required to contact the upper and lower metal plates of the watch dial to detect.
Here's a comparison with these two different measurement methods.
As can be seen from the above video, the error obtained by the two measurement methods is small. So this piece of static heart rate measurement is still relatively accurate.
Fourth, APP experience
The function that can be experienced on the wristband is limited after all, so to experience more functions, it needs to be realized through the mobile phone APP. Install "millet movement" APP on mobile phone. I use red rice Note3, so you can use the millet account on your mobile phone to log in.
After logging in, you need to set information about the date of birth, height, weight, etc. in your app according to your physical condition. Then you can search for the bracelet.
Of course, the Bluetooth function of the mobile phone needs to be turned on during the search, and after the bracelet is searched, it needs to be confirmed by clicking on the bracelet. After connecting, it prompts that a new version can be upgraded.
After the upgrade, they formally enter the APP. Here you can see that it has been 43 days since the last charge. It can be seen that this is at least 43 days before the factory. The upgraded version is V1.0.0.11
The homepage of Xiaomi Sports will display some information about the exercise, such as the number of steps of the day, sleep monitoring records, heart rate measurement records, etc. The icon of the small person in the upper left corner is to enter the “running modeâ€. The second page of "Discovery" contains some more interesting information.
The third page of "Smart Play" is the setting for "smart" aspects of the bracelet. If the call alert function is turned on, the ring will vibrate when there is an incoming call and a small icon of the phone will be displayed on the screen.
With the alarm clock, you can leave the phone and customize the alarm with a separate hand ring. This is very convenient. There is also an APP notification reminder function. When it is monitored that the set APP has a notification, it will also vibrate on the wristband and display the corresponding APP. Here I set up two WeChat and QQ.
The sedentary reminder function is still very practical for the current office family. At the same time there are other functions, such as SMS alert function.
The last page is about personal settings. Here you can see the average number of steps, Premier Cheng, etc. In addition, the basic settings for the bracelet are also here.
Running mode
Specifically tested in the APP running mode, as shown in the figure below, the running mode requires the bracelet and mobile phone to maintain the Bluetooth connection. Running mode supports real-time display of heart rate, so in order to more accurately measure the heart rate, you need to tighten the handle ring. After turning on the GPS of the mobile phone, the current mileage, time, pace, pace, and real-time heart rate can be displayed on the running interface.
After the run, you can view the history, you can see the same information, but I did not find where to look at the heart rate curve, it should not have this feature.
The above test was only for a short period. In order to ensure that the heart rate can be measured normally, the wristband is intentionally tight. Because the world was covered with drizzle, the heart rate measurement was still normal. It may be that the arm was wet, the heart rate could not be measured normally, and the position of the bracelet could not be measured. I thought the bracelet was broken. At this time, the rain was getting bigger and bigger, so he returned. After returning to dry, try heart rate function again and normal measurement.
It can be seen that even if it does not rain, after sweating in the arm for a period of time, it will also affect the real-time heart rate measurement function. However, it should be accurate in the accuracy of the previous measurement, because there is no heart rate fluctuates.
Fifth, endurance
After the bracelet is on hand, look at the power and take screenshots at noon every day. As you can see in the image below, 20% of the electricity is consumed in four days, with an average of 5% of a day (average daily call text messages and application reminders total about 30 times. ) This way, it will be absolutely no problem if the bracelet is used for more than two weeks.
Sixth, summary
Millet Bracelet 2, belongs to Xiaomi's third bracelet product, this product added to the screen, using the bracelet after getting out of the phone has more applications.
In terms of advantages, this bracelet is comfortable to wear and it was said above that it will ignore its existence after it is adapted.
The algorithm for stepping is not bad, and there will be no more than one step in raising the arm.
Static heart rate testing is more accurate.
At the same time, it supports the use of calls, text messages, and APP notifications to remind people that they are practical and can greatly reduce the chance of missing important calls and information in outdoor environments.
More than two weeks of life is awesome.
However, the disadvantages are obvious. The screen is equipped, but the screen is too small. Calls, text messages, and APP reminders can only see the icon, but they cannot display the other person's name or phone number, and the display contents such as WeChat and QQ cannot Extravagant hope.
In addition, after opening alerts for incoming calls, text messages, etc., the mobile phone and the bracelet must always be connected, and we know that the Bluetooth connection has a distance. If the bracelet and the mobile phone are beyond the distance, after returning, it is very likely that the bracelet is not Timely reconnect with the mobile phone, and if the phone is muted at this time, it will still miss important calls, I have encountered in these days of trial. So I hope to add an icon indicating whether the phone is connected to the wristband, so that if there is no connection, it can be discovered in time, so as not to miss important calls.
After these days of experience, I feel that if I can buy the Millet Bracelet 2 at the original price of 149 yuan, it still has a comparative value.