Xiaomi Air 2S vs Xiaomi Air 2: Upgrades in Latency, Wireless Charging, Battery Life, Connection Stability

By Miamia 2020-04-29

Earlier this month, Xiaomi took the wraps off its latest true wireless earbuds, the Xiaomi Air 2s. Literally, as a successor of Xiaomi Air 2, the Air 2s undoubtedly has made tremendous upgrades. Then where are the upgrades? Does it more worth buying than the Xiaomi Air 2?

Xiaomi Air 2s vs Air 2

Here we've made a detailed chart of specs to help you better find out their differences.

Xiaomi Air 2S vs Xiaomi Air 2: Specification Comparison

Xiaomi Air 2S
Xiaomi Air 2
60 x 60 x 45mm (Charging Box)
4.5g (Per Earbud)
Bluetooth Version
Bluetooth 5.0
Transmission Distance
Battery Capacity
Earbuds: 40mAh
Earbuds: 40mAh
Charging Box: 450mAh
Charging Box: 300mAh
Wireless Charging
Yes (2.5W)
Charging Time
1 Hour
Music Time
5 Hours (Earbuds);
24 Hours (With Charging Case)
4 Hours (Earbuds);
14 Hours (With Charging Case)
Operation Mode
Touch Control + Voice Assistant
Driver Unit
14.2mm Dynamic
Sound Quality
399 RMB
369 RMB

Similarity: What do they have in common?

Externally, the Xiaomi Air 2s and Air 2 look basically the same. Both of them adopt half in-ear structure to better fit ears for more comfortable and stable wearing. The single earbud weighs only 4.5g. IPX5 waterproof rated, it can withstand rain drop and sweat.

Xiaomi Air 2s vs Air 2 _ Appearance Comparison

The Air 2s and Air 2 all apply Bluetooth 5.0 chips with LHDC HD decoding technology to realize lossless sound quality. Built-in 14.2mm dynamic loudspeaker and large composite diaphragm moving coil, the earphones can restore more sound details.

Additionally, each earbud is built-in two microphones. And both of them work with ENC environment noise cancelling technology to effectively reduce ambient noises and ensure HD calls. (Don't support active noise cancelling).

The Mi Air 2s and Air 2 all support touch control operation. Tap on the earbuds to access to music, call and voice assistant. Equipped with an infrared optical sensor, the earbuds can detect the wearing status in real time. Instant pairing and automatic connection are supported.

Beyond that, speaking of the charging box, both are designed in same shape. Flat edge and straight notch make it able to stand well on the desktop. And a type-C charging interface is at the bottom of the charging box for wired charging. The noticeable difference is that the Air 2s adds wireless charging feature (appr. 2.5W).

Difference: Where does the Xiaomi Air 2s have an edge over the Air 2?

Ultra Low Latency

The Xiaomi Air 2s fully optimizes the LHDC Bluetooth decoding and hardware, significantly reduces the sound delay to ensure the synchronization of sound and picture, and comprehensively enhances the audio-visual experience. It's tested that Air 2s's latency is lower than Air 2 in standard mode. In game mode, the latency of Air 2s is greatly reduced to about 190ms, while the Air 2's latency is around 230ms. It's very friendly to gamer friends.

Battery Life to 24 Hours

The Xiaomi Air 2s and Air 2 all pack a 40mAh battery that goes from zero to full in 1 hour. According to official data, the Air 2S supports 5 hours of continous working when used alone. If used together with charging box, it can last up to 24 hours. In contrast, the Mi Air 2 offers average battery life: it can continously work for 4 hours when used alone, and 14 hours when combined with charging box.

With same built-in battery capacity, why does the Air 2s last longer than the Air 2? The new generation low-power chipset that it uses should be mentioned.

2.5W Wireless Charging Supported

The Xiaomi Air 2 doesn't support wirelss charging, with one Type-C interface at the bottom of the charging box for wired charging. Then Xiaomi ups the ante and brings in the much-waited wireless charging feature to the Air 2s.

Xiaomi Air 2s _ Wireless Charging Feature

According to official data, its wireless charging could reach around 2.5W, while the Airpods wireless charging power is about 1.1W. If your mobile device supports wireless reverse charging, you can use it to wireless charge the Air 2s.

Binaural Synchronous Transmission

The most impressive difference is that the Xiaomi Air 2s TWS earbuds upgrade the dual-core chip. The previous generation headset Air 2 uses one earphone as main earphone, another as sub earphone, then the sound signal transmits from main to sub one.

And now the Air 2s adopts a new binaural synchronous transmission technology. It allows each earbud to be connected to mobile phone separately, and simultaneously transmits the sound signal to the left and right earbuds, greatly reducing the sound delay. Meanwhile, the anti-interference ability is stepped up, and the left and right earbuds connection is more stable.

Does the Xiaomi Air 2s more worth buying than the Air 2?

Overall, as a true wireless bluetooth headset, the Xiaomi Air 2s offers us excellent performance.

It is comfortable to wear, supports LHDC and wireless charging, and has a extremely stable binaural synchronous connection. Plus, the battery life is increased by 70% over the last generation Air 2. It also provides outstanding intelligent voice control and in-ear detection.

The Xiaomi Air 2 is priced at 369 RMB, and the Air 2s has a litter higher price of 399 RMB. Given its close price, with all the bells and whistles of Air 2, the Air 2s TWS earbuds carry the day.

Go Mobile

The browser you are currently using is outdated

We recommend you upgrade your browser to one of the following new versions.

Why should you upgrade your browser?

1. Increased browsing speed

2. Supports the latest technologies

3. Increased Security