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Redmi AirDots True Wireless Bluetooth Earbuds Tests

Redmi AirDots True Wireless Bluetooth Earbuds Tests

Here is the true wireless headset of Xiaomi brand.

It is said to be a cost-effective product equipped with high-end configurations but set at a low price. Let's look at the review.


It's a small black box. “My name is AirDots, I belong to the Redmi family, and I am a wireless headset with Bluetooth 5.0.” 

Opening the box, you can see these three things: a headset in the charging box, an instruction, a pack of other two models of earplugs on the cover of the black box prints Xiaomi's logo (MI). 

There is a Micro-USB charging port. Yes, with no wire at all, and on the back side of the box, what remains unchanged is the position of the product specification. 

After the box is opened, two wireless earbuds appear. Whenever the earbuds are charging, the red indicator light is on all the time. 

As I take it out, the white light flashes, indicating that the headset is waiting for pairing. 

There is a button on the earbud to control it. Logos are on both the left and the right side, you don't say, if, without the logo, the headset may be worn in a wrong way. 

This is also the difference between and AirPods.

Though we are familiar with AirPods, let's take out AirPods and make a comparison between the two products. 

Firstly, AriDots are rather round-shaped, and AirPods aren't. 

Next, let's come to the comparison of size, volume, and shape. 

In terms of the vocal body part, we can tell that the sound quality is certainly not the same as vocal units of the left and right differ from each other. 

At last, the price! With the amount you pay for one pair of AirPods, you could buy more than ten pairs of AirDots. 

Hands-on Experience

As soon as I got this headset, I began to use the headset. 

 I prefer the AirDots to AirPods in many ways, though it is unfair to compare these two products side by side.

1.Bluetooth connection

The first impression of the Bluetooth headset is determined by the Bluetooth connectivity. 

Firstly, let me explain: worth of the penny, worth of the goods. 

When connecting: the right earbud, which is the primary connection functions as seen in the advertisement. 

After I plugged it, and it gets connected while the left earbud usually experiences some delay, because it has to communicate with the primary earbud after being connected to the device, so as to achieve dual-channel stereo

When successfully connected, both the right earbud and the left one will give out sound of "Connection Finished." 

During my testing, however, many times, the left earbud failed to connect with the right ear. Having tried various approaches such as rebooting and so forth, I still don't know how to solve this problem (and I believe that it is abnormal). 

When disconnecting: Unlike AirPods, AirDots uses a physical way to disconnect

Precisely that is, use two contacts to emit a "disconnection" signal when get contacted with the charging box too and then finish the disconnection. 

And after the right earbud is put back to the charging box, there would be a 5 seconds' delay before the music of the mobile phone stops. 

This delay is an indication of a serious problem. 

Whereas, AirPods finishes disconnection as soon as it gets back into the charging box. 

Extension: I use Sony WI-1000X to connect Honor Note 10 (Android) to listen to music, while AirDots is already matched with Note 10, whenever I remove the main headset, it will automatically break off its connection with the Sony WI-1000X. 

As for the lights, I think there is no more need to say, that the red light means that it is charging or that it is out of power, while the white means normal connection, so on and so forth. The instruction is of much help for these issues. And they do not influence daily using. 

After field testing, I found that both the iPhones and Android phones can identify the left and right earbuds individually and can connect them separately.

Tests on the iPhone:

The implied connection refers to the ®, and it is also successful to finish the connection with (L) as long as it's found. 

Once being connected, the left side other than the right side will produce the sounds.

Tests on Android:

When (R) is connected on the iPhone, even if the (L) is not connected, there is no way for other Android phones to connect it alone. 

Android phones can also scan out the "L and R” separately. And they share the same user experience with the iPhone. 

They two, actually, are like the twin brothers. 

On both the iPhone and Android phones, when the (R) is put back into the charging box, the music will automatically switch to another headset to play, and as the (R) is taken out again, it will automatically switch back. 

Is it that I might have mistakenly operated the switch of separate work mode for these two headsets? But I couldn't see any note saying there is this mode.

2. Bluetooth stability

Is it ensured that we can use the headset freely as long as it is being connected? 

As for this issue, we have designed out a more artificial test.

Test environment: A lab full of desktops and various wireless networks

Test devices: iPhone 6s, Honor Note 10

Test results:

1. Between the distance of 6m the music source: within the environment (inside the room, with a depth of about 6m), placing the mobile phone in a corner after connecting it with the headset.

 we have confirmed that no matter how and where we walk, there is no break in transmission of the music playing in the headset, they play and the sounds keep running smoothly with no other noise interference as a result of signal loss.

2. Between the distance of 6m, with addition to interference by a wall: immediately we step an inch from the room, there is always a break in transmission, even while standing close to the door, which is not more than 7m from the music source. 

Immediately outside the room, though within the same distance, signal transmission from different directions varies. We should move one step after another so as to measure the specific data. 

3. Outside the room plus a distance of nm (n>0): the signal transmission is completely out of question. 

Compared with AirPods, AirDots that shows more swift speed in disconnecting as there are no signals being detected. 

AirPods may take over 10 seconds continuing to search for the playback source before losing connection completely, while AirDots immediately disconnects after just 2 seconds after the total signal loss.

But if you walk back to the playback source when the AirDots has lost connection, it will automatically reconnect, though the responding speed is relatively slow.

3. Sound Quality

When talking about headsets, no matter how good or poor it may be, we have to take into consideration an inevitable issue, that is, the sound quality. 

Every ear shall encounter the right headsets that are satisfying. 

But as there are 1000 Hamlets in the eyes of 1000 people, it's not surprising to apply this principle in sound quality. 

After all, different people vary in their sense of hearing, sound preference and several other aspects. 

Therefore, this test of sound quality just applies to the limited product—the AirDots.

Before I started this test, I always hold the belief that a headset at least should be equipped with dual-channel stereo. 

No one requires it to have a sound effect, but please, can it just be a little bit loud? It turns out that I am wrong. But this is not a surprise. 

The second strike it gives me is that when I listened to a song, the voice broke! 

However, when I visited the webpage of AirDots to look up more details about it, I found the problem: the AirDots has a descending but strong low frequency (LF), and its medium-high frequency (MID HF) is very gentle and soft. 

Well, this is to say, no consideration is given to how the high frequency (HF) part makes its sound. I am proved wrong, again. It should be my fault for thinking that the HF is a must considering that shall be taken when testing headsets. 

Next comes the "descending but strong low frequency (LF)” part. 

What does it mean? 

From the subjective view, we call it that the LF tone does not sound stuffy. And in terms of data diagram, the voice is rather sharp according to the waveform. The sound is all generated by vibrations, as everyone knows. 

Or let's take the drumbeat as an example, during the sound period from the first and loudest sound as the drum being knocked on (here the vibration is the strongest), to the descending sound (here the vibration gets weaker), until the drumbeat sound disappears (here without any vibration). 

Generally, the more details of sound can be heard, the better quality does the LF has. 

4.Wearing experience

Although the wearing experience is totally subjective, it should have some universal value to the mass. 

So, in this section, we will consider the wearing feeling from two aspects, one is stability and the other is a comfort. 

Stability: The headset is very light, each weighing 4.1g. 

As the whole, it has no support, and relies only on the earplugs, though the auricle can provide certain hold, it is very weak. 

When wearing it in the ears, the wearer can still feel the headset's existence by its weight. 

Certainly, the pounding sound is inevitably generated as the wearer is walking, being that this is an in-ear device, but it won't be as strong as the stethoscope effect. Under a noisy external surrounding, the pounding would be decreased to less annoying. 

I once wore them when I went running, and I wondered if it was because of my ear canal that I always felt that they were going out of my ears by the next second. 

By the way, the original earplugs' size for the headset itself is (M), at first, I owed this bug to the size issue, but after I changed them to L size, I felt them still not fully inserted into my ears. 

It's especially unstable when I start running up that I have to be worried about how to keep them stay firmly in my ears. That feeling, really, is not quite good. 

Comfort: As it has been prevalent in public to use headsets, the protection of hearing calls for attention day by day. At this time, noise-canceling headsets appear to be very practical. 

AirDots itself, belonging to the earplug family, can cancel a certain amount of noise. But after all, it needs the ear canals to support its body, so even wearing a little while (just a few minutes), the pain felt in the ear canals are obvious. 

This is because the earplugs are expanded in order to hold the whole of the plugs steadily in the ears that they won't be lost easily. 

AirPods, however, is different. There is no need to place the whole into ears, but just to hang them on, so the hurt feeling shouldn't be as strong as AirDots causes. 

For example, I once have worn AirPods for close to 3 hours, but it didn't hurt my ears as bad as AirDots did, only for a few minutes. 

When staying outdoors, you need to increase the volume than normal to make the content played more clearly, and in this scenario, the hearing might be affected.

5.Calling effect

As a Bluetooth headset connected to a telephone, the AirDots are required of various functions, among which the phone call quality is a key aspect besides the music-playing. 

Test Object: Honor Note 10

Test Environment: Empty Street, with the Telecom 4G network

Test App: Skype

Test Method: Skype audio call

Comparison Group: AirPods

Testing Process: Under the same environment, connect the Honor Note10 with AirDots and AirPods respectively, and then use them to make audio calls to test the sound effect through the phone. 

Test results: Unfortunately, the AirDots lost the game. 

Specifically, the two major problems shown by this test are: first, the voice delay (about 2 - 4seconds' delay, and the feeling of delay is particularly obvious so much so that it has affected the quality of a normal phone call); and the second is redundant noise resulted from unstable signal transmission (standing with the phone normally held in hands, there would be murmuring noise, with no ruling out of the Skype's factor).

In order to model the situation appears in real life, we didn't use WiFi and set the test environment outdoor. 

※ The test process does not include a more detailed horizontal comparison, so it can be seen as a single case if necessary. 

6.Other aspects that may be cared for 

This time, we have not tested how long the battery life lasts in a specific test, in that we’ve considered the AirDots are used only for commuting.

Generally speaking, the headset can be recharged no matter where it is taken to, so we did not include the issues of battery life or charging speed. Given this condition, the battery issue is out of the discussion. 

BTW, isn't it a good thing to the battery that is recharged whenever it is convenient? 

Neither have we done any test in terms of gaming experience. 

In the actual experience, the data transmission of mobile games is exactly the same as that of music playing-- there is a little bit delay in transmitting, which can be ignored to zero. But the impact on games shall be rather obvious.

Needless to say, the ground noise is inevitable for Bluetooth headsets such as AirDots. 

And the same is applied to AirPods and Sony WI1000X.

I wonder that maybe the disconnection is utilized to prolong the battery life because I've found that the ground noise stops as there's a very short period during which no sound transmission is made (similar to hibernation).

 And when the sound source again starts ringing, there will be an about 1 second's silence before it succeeds in reconnecting, the most obvious thing is that the headset connected to the phone does not make any sound. 

That is to say, the headsets wouldn't play the sound of phone unlocking when the ground noise is delayed until the phone is unlocked, the headset would re-emit the sound of the ground noise.


We have basically finished pertinent and field test toward all possible scenes that this product might be applied to, and our summary goes as follows: 

Take it as you see it:

1. Less than $15 for a pair of wireless headsets, why not have a try?

2. The earbuds can be connected separately, and the Bluetooth connection is relatively stable, ranking high among the low-end headset market. You cannot expect more allowing for its reliable performance with such an economical price. 

3. Equipped with Bluetooth 5.0 (though seemingly without any outstanding advantage during using) plus a long battery life of 12 hours (including charging box), it can fairly meet the anticipation of heavy users. 

4. Both the left and the right headset can work well separately.

Think before you leap:

1. The price is just acceptable for basically all the public;

2. The quality of the phone call is impractical; 

3. You can't be fooled by its price being lower than $30. 

Xiaomi Redmi AirDots Wireless Bluetooth Headset



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