Earlier this month, Xiaomi released a new product of Xiaomi bracelet. Although it has been separated from the first generation of Xiaomi bracelet for fifteen months, this Xiaomi bracelet is not a new generation of products. The biggest change is the function of heart rate monitoring, so this product should be called Semi-iterative product of the millet bracelet. Not long after the release, we also got this product and had a few days of experience. The appearance is not much different from the standard version.
Because of the addition of a photoelectric heart rate sensor that uses the Photoelectric Volume Pulse Waveography (PPG) to measure heart rate, the size and weight of the Xiaomi bracelet's light-sensitive version has changed:
· Length: 37mm (standard version 36mm)
·Width: 13.6mm (standard version 14mm)
·Thickness: 9.9mm (standard version 9mm)
· Weight: 5.5g (Standard Edition 5.0g)
However, overall, the appearance of the Xiaomi bracelet light version is not much changed compared to the Xiaomi bracelet standard version, it is still a long cylindrical body design, the aluminum metal shell is treated with a matte process, the periphery of the bracelet body There are also high-gloss trimming.
In the middle of the fuselage, there are also three indicator lights that use laser drilling technology, which are lined up with sufficient transparency and do not affect the IP67 waterproof function of the bracelet.
The wristband of this experience is made of black rubber. It is a little difficult to put the wristband on the wrist or remove it from the wrist without outside help.
(The impression on the wrist is caused by wearing this bracelet.) Because my arm is not thick, I feel comfortable after wearing the tightest wristband. It is not heavy in itself, 5.5 grams; the second is that the rubber wristband can fit the wrist more closely. The charging is also the same as the standard version. You need to take the body out of the wristband and connect it with a dedicated charger. However, it is not easy to put it back. It is necessary to take off the strap and squeeze the strap to squeeze it in. Another point to note is that the light version is not universal with the standard version of the charger. Heart rate monitoring is not allowed? Download the "Millet Sports" app on your iPhone or Android phone, and log in with your Xiaomi account. After entering your personal height, weight and other information, you can bind the Xiaomi bracelet and complete the following functions:
· Sports record: record the number of steps, graphically display the amount of motion all day, similar to the step number interface of UP
· Sleep Record: Automatically record sleep
·Smart alarm clock: vibrations of different intensities according to the depth of sleep
·Mobile phone call reminder: the phone call is not answered for 20 seconds, it will vibrate to remind, flashing blue light
·Bracelet ID: Unlock the phone after wearing the bracelet without a password, equivalent to a device for personal identification
The implementation of these functions is no different from the standard version. If you are interested, you can move to our company to understand the experience of the Xiaomi bracelet standard version. The experience of these functions is not shown first. The heart rate monitoring function of this version of the Xiaomi bracelet will be mainly introduced.
The heart rate measurement method of the Xiaomi bracelet light-sensing version PPG, the full name "photoelectric volume pulse wave tracing method", in fact, most of the heart rate measurement methods used in mobile phones, smart watches or wristbands with heart rate monitoring function are PPG, among which Also included are Apple Watch, moto 360, and Samsung S5. PPG works by illuminating the blood vessel with a light-emitting photodiode for a period of time, and measuring the heart rate based on changes in the amount of green light absorbed by the blood. For equipment using PPG, everyone should pay attention to prevent interference from external light sources when wearing, so that the sensor on the back of the bracelet is close to the skin, especially when measuring heart rate.
The heart rate monitoring of the millet bracelet light-sensing version is real-time monitoring. While the user is running, in theory, he can also pay attention to his real-time heart rate. However, there is no screen in the Xiaomi bracelet. If you really want to pay attention to your heart rate, you have to hold the mobile phone while paying attention to the screen of the mobile phone while paying attention to the road conditions of running. This is neither safe nor too cumbersome. In the exercise summary after the end of the run, the user can only see the heart rate average of the exercise and can not see the change of heart rate. These small shortcomings have reduced the practicality of exercise real-time heart rate monitoring. Of course, the millet bracelet light version can also perform static heart rate monitoring. However, when measuring a single static heart rate, the user needs to raise the arm to the chest and the wristband needs to avoid moving. The accuracy of the heart rate monitoring results of the bracelet is presumably a concern of many users. After all, at the beginning of the release of the light-sensitive version of the Xiaomi bracelet, there was a questioning voice on Weibo.
According to my many experiences and comparisons, the test results of Xiaomi bracelet are almost the same as those of Apple Watch. The results of the two tests are completely the same. There are a few times, the results of the two are different, but the result error Both are between 1 and 2 times, and such errors are almost negligible. What is the biggest advantage of the millet bracelet light version? Compared to the standard version of the theoretical 30-day battery life, the theoretical version of the light-sensing version with real-time heart rate monitoring is only 10 days. When the actual use is more than one week, this bracelet does not appear to be incapable, which may be the trade-off between function and battery life.
So what is the advantage of the $99 Xiaomi bracelet light version? In fact, its biggest advantage is that you can buy a wearable device with heart rate monitoring at a price of 99 yuan. This is indeed very valuable in the current market. The function of the verification tool of the Xiaomi bracelet as a user ID is also gradually expanded. For example, Alipay has already supported the use of the Xiaomi bracelet instead of the payment password, but it would be better if Xiaomi moved faster in this regard.
ZhenHuan's UL class 2 units power supplies, provides with all global AC input voltages range from 100VAC to 240VAC single phase. The series 12V UL Class 2 Power Supply is one wall mount style or desktop stype, all in one stype, high efficiency and reliability class II installations AC to DC power adapter and support class 2, Limited Power Source (LPS) requirements. The series class 2 power transformer offers products output ranging from 5W to over 60W, covers a wide variety of AC input blades including America blade, Europe blade, Korea blade, Australia blade, United Kingdom blade and China blade for wall plug adapter; IEC320-C14, IEC320-C8 and IEC320-C6 AC Inlet for desktop adapter.
UL Class 2 Power Supply,24W Class 2 Ac Adapter,Power Supplies Class 2,Led Lighting Power Transformer,Class 2 Power Supply 12V
Shenzhenshi Zhenhuan Electronic Co Ltd , https://www.szzhpower.com