In 2014, with the release of Xiaomi bracelet, the whole Internet seemed to start paying attention to the bracelet industry overnight. However, the initial bracelet works are not satisfactory. Take Xiaomi as an example, he can record his usual sports data, but he doesn't even add an ugly appearance to the time display, which is really uninteresting. With people's understanding of the bracelet, in 2015 and 2016, it can be said that the bracelet has really achieved the degree of both beauty and practicality. For users who like sports, it is very worthwhile to wear a satisfactory bracelet.

Function or appearance? It seems that there are not many bracelets with the best of both worlds. High end watches, such as Huawei Watch, are often equipped with sports records and heart rate monitoring. Although they have many functions but are expensive, ordinary users are deterred. The author has also used the Evian bracelet. It can be said that the Evian i5 Plus bracelet is also highly recommended. It has a high face value, but it is also simple in function and does not have the function of heart rate monitoring. We are lucky to get the CoBand K4 smart bracelet of Demon Lover on the platform of Lei Feng's "computer trial". Today, we will show you whether this bracelet has the best features and looks.

This magic charmer CoBand K4 smart bracelet has a 0.86-inch OLED screen that can display time, movement, heart rate and other data. The battery capacity is 50mAh, but the endurance is not an idle person. In the week evaluated by the author, the power consumption is only more than 20%, which can be said to be very powerful.

Consistent with the design of many bracelets, it adopts the detachable design of screen host and watch strap. In fact, the biggest advantage of this design for users is that they can change the colorful watchband. On the official website and Jingdong Mall, the bracelet has dark black, vitality orange, lemon yellow, sky blue, cherry blossom powder, and piano white, which is convenient for users to choose their favorite color.

Accessories family photo, body, watch strap, charging data cable, instructions. Maybe the manufacturer wants to take the international route. The manual is in both Chinese and English.

If you press and hold the bracelet after you get the product and cannot start it, it is likely that the body has no power. It doesn't matter. Just connect to any USB charging port to charge the CoBand K4 smart bracelet. However, the data cable must be used here. In contrast, the i5 Plus is relatively simple in this regard, because it is equipped with a USB port. If the special data cable is lost, it will be difficult.

After the charging data cable is connected, the USB can be plugged in anywhere and charged. The power plug, computer and mobile power supply are all OK. You should pay attention to the time displayed on the screen in horizontal mode. What if we want to view it vertically when wearing it on our hands?

No problem, as long as you use the mobile phone client to connect to the bracelet, the horizontal review and vertical screen are your own choice. In the device system settings, we can change it to the vertical screen mode, so that you can watch the time more easily on your hand.

Amorphous CoBand K4 smart bracelet is made of TPU thermoplastic polyurethane elastomer rubber, which is much better than ordinary rubber and silica gel in terms of wear resistance, strength, cold resistance, oil resistance, water resistance, mold resistance and flexibility. Moreover, the appearance has a "frosted" texture, which is very good both in look and feel.

There is only one touch button on the screen, which can be used as the switch of power supply (long press for more than 5s), as well as parameters such as lighting the screen, viewing sports data, heart rate, and heat consumption. Of course, the CoBand K4 smart bracelet of the Demon Lover supports "raising the wrist to illuminate the screen", so that every time we raise the wrist to look at the bracelet, the CoBand K4 can automatically illuminate the screen and display the current time.

Different from other traditional smart bracelets, the CoBand K4 smart bracelet has a heart rate sensor at the back of the body. With it, we can monitor our heart rate at any time to better understand the current health status of the body.

Scan the QR code download client on the box or instructions, open the mobile phone Bluetooth, search and connect, and find the model of the bracelet we are currently using: CoBand K4， In the client, we can set the settings such as incoming call, SMS reminder, alarm clock, heart rate monitoring, wrist lifting and screen lighting, 24-hour format, horizontal and vertical screen, and screen off time.

In heart rate monitoring, we can also set a regular time to monitor the user's heart rate. When the heart rate exceeds 100 or the user-defined frequency, the bracelet will enable the reminder function to remind the owner that he or she may be exercising too much or that he or she is ill.

When performing manual heart rate monitoring, the sensor on the back of the bracelet lights up green and starts monitoring. Of course, if you haven't worn the bracelet, the heart rate monitoring result is "0".

The data can be detected normally only when it is worn on the hand. However, I complain that the monitoring of CoBand K4 is not very stable, and the data has always fluctuated. It can't be that the author's heartbeat has been uneven, ha ha.

In addition to time, alarm clock, heart rate monitoring and other functions, the iMagic CoBand K4 smart bracelet also supports social software alerts such as QQ, WeChat, and custom applications, so that we can preview social information faster. At the same time, CoBand K4 can also record the quality of our sleep every night. For example, the author slept for only 5 hours and 30 minutes, slept for 60 minutes, slept for 3 hours and 45 minutes, and woke up three times. Hmm, the quality of sleep is really worrying. After writing this review, we should take a rest earlier.

In the client, we can view the movement records of the day. If you don't like to open the mobile phone client, you can also click the touch button on the watch to view, which is very convenient.

After a week of wearing experience, the author is very fond of this CoBand K4 smart bracelet. First of all, it has a high face value, especially in black. The bright piano body and frosted TPU watchband have excellent texture; Secondly, this bracelet has all kinds of functions, such as sports record, alarm clock reminder, QQ WeChat social reminder, heart rate monitoring, sleep quality monitoring, and most importantly, the endurance is also very powerful. Do contestants need function or appearance? This bracelet lets us know that you can have both fish and bear's paw. If you want to buy a bracelet with high appearance and rich functions recently, you can take a look at this CoBand K4 smart bracelet.

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