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Xiaomi Band 7, Band 4 NFC, as well as Buds 4 and Buds 4 Pro officially presented

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Specifications and Features of Xiaomi Band 7 Xiaomi has released the Band 7 in two flavors: Band 7 and Band 7 NFC. The stylish smart device features a 1.62-inch AMOLED display with a resolution of 192 x 490 pixels, a pixel density of 326 ppi and a maximum brightness of 500 nits.

earlier today, xiaomi held a presentation of smartphones of the new series Redmi Note 11T Pro. The brand also introduced Xiaomi Group 7 at this launch event, so let’s see what the new generation of Mi Band has to offer.

In this article you will find:

Specifications and features of Xiaomi Band 7

BUT xiaomi released Band 7 in two flavors: Band 7 and Band 7 NFC. Stylish smart device comes with screen 1.62-inch AMOLED with 192 x 490 pixels resolution, 326 PPI pixel density and 500 nits peak brightness. The device has an always-on display, as well as dynamic wallpapers of Mars, such as those available on MIUI 13. The design of the smart bracelet is similar to the Mi Band 6 and weighs only 13.5 grams.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro officially presented 2

Band 7 comes with Xiao AI assistant and supports 120 sports including four professional sports with activity tracking. analyze data and more for general guidance.

In terms of health-related features, the smart bracelet offers all-day blood oxygen monitoring and alerts the user if blood oxygen levels fall below 90%.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro officially presented 3

In addition, the device comes with a heart rate tracker and a sleep tracker capable of providing data such as qualitative sleep breathing, REM sleep, and the quality of sleep time. It also offers stress monitoring, women’s health tracking, and PAI (Personal Activity Intelligence).

Band 7 comes with a large drums The 180 mAh battery provides up to 15 hours of use without recharging. A smart bracelet lasts for about 9 days with intensive use. It uses a magnetic charger like its predecessors.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro officially presented 4

Xiaomi Band 7 Pricing and Availability

option Xiaomi Band 7 NFC it costs 299 yuan (about 42 euros), while the non-NFC variant, Band 7 costs 249 yuan (about 34 euros). The smart bracelet is ready for pre-order in China and will go on sale for the first time on May 31. There is no information about its global release yet.

Redmi Buds 4 and Buds 4 Pro released

The Redmi Buds 4 and 4 Pro are both affordable offerings, with the latter being more premium between the two devices. TWS headphones compete with One Plus kidneys Z2, the real me Buds and more on the market.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro are officially presented on 5

Specifications and features of Redmi Buds 4 and Buds 4 Pro

Redmi Buds 4 e OS 4 Pro Come with earpiece design, the last one with torso. Users can control various functions by touching any of the earbuds. Both TWS earphones are IP54 dust and water resistant certified.

Operating Systems Redmi Buds 4 and 4 Pro feature a 10mm dynamic driver and offer 35dB noise reduction with AI smart tuning. The Pro variant features HiFi sound quality and virtual stereo sound. It also offers up to 43dB of noise cancellation and is said to be resistant to wind noise.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro are officially presented on 6

Both TWS earphones have double transparency mode. You Redmi Buds 4 Pro have a low latency mode of 59ms. Both regular and professional models support Bluetooth 5.2 connectivity.

Operating Systems Redmi Buds 4 and Buds 4 Pro are supported for 30 and 36 hours of total battery life with the charging case. Headphones can be instantly connected to devices after opening the storage case.

Xiaomi Band 7, Band 4 NFC and Buds 4 and Buds 4 Pro are officially presented on 7

Prices and availability of Redmi Buds 4 and Buds 4 Pro

Prices Redmi Buds 4 it costs 199 yuan (about 28 euros) and the Buds 4 Pro costs 369 yuan (about 52 euros). Both TWS headsets are ready for pre-orders and will go on sale starting May 30 in China. The regular variant is available in white and blue, while the Pro model is available in Polar Night and Mirror Lake White.

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Better Organ Preservation Through Advances in Cryopreservation

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Better Organ Preservation Through Advances in Cryopreservation

Saffron Bryant

cryoprotector illustration

The development of cryopreservation technology has made it possible to rapidly advance in reproductive technologies, stem cell therapy, and even save species from extinction.

However, as part of the cryopreservation process, agents are added to protect cells from damage and dehydration during the freezing process. Physical Organization.

The two main agents used in cryopreservation in recent decades are dimethyl sulfoxide and glycerol, both of which are toxic.

These agents are also unsuitable for hundreds of cells, and so far preservation of organs and tissues has not been achieved. Because of this, up to 60% of donor hearts and lungs are discarded.

“We have a lot of organs, but most of them are just thrown away,” says RMIT’s Saffron Bryant, principal investigator on the new study. “We only have a few hours to transfer an organ from a donor to a recipient.”

The research team analyzed the effectiveness of eutectic solvents as cryoprotectants. They compared it to six different solvents in mammalian cells and tested thermal properties, toxicity, and permeability in four mammalian cell types, including skin and brain.

The researchers determined that a eutectic solvent made from proline and glycerol was the most effective cryoprotectant. effective for mammalian cells.

This solvent was also less toxic than when its components were used alone, highlighting the potential for optimizing cryopreservation using combined agents.

These cryoprotective agents can even be tailored to specific cell types and thousands of combinations could potentially be developed.

The team also did increase incubation time cells with this new cryopreservative, according to the results of the study, published no Journal of Chemistry of Materials B.

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“Incubating these cells with cryoprotectant at 37°C for several hours before freezing and maintaining their viability is an important step in organ and tissue storage,” says Bryant.

“This means that we can expose organs to cryoprotectants long enough for them to penetrate deeper layers of the organ without causing damage,” he says.

s o 1850 people on the waiting list for organ transplants in Australia and more than 100,000 people awaiting transplants in the US, these new cryoprotectants could help keep donor organs viable for years, not hours.

“We have a long way to go in our studies because we only looked at individual cells, and for organs it is a much more complex process,” adds Bryant.

“But if we can create this approach to storing organs, we can eliminate their shortage – no queue“, he concludes.

ZAP //

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Pixel 4 gets an update from Google ahead of time

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Android 13 Pixel 4 Google atualização beta

Android 13 is being developed at a good pace, Google periodically releases new test versions, as expected. This system is expected in late summer to update Google smartphones first.

Still without a planned and expected release date, now a contingency arose. Unexpectedly, a Pixel 4 user received an update to Android 13, even though it is a beta version.


Google has an open testing program that anyone who wants to try Android 13 can use. It's not limited to just pixels, but has opened it up to several models from other brands so that they can evaluate this version.

What the user of this Pixel 4 did not expect is that their smartphone will receive Android 13 version TP1A.220603.002.A1. Apparently, this is reserved for Google internal testing and should not have been available outside the company.

Even stranger and even more ridiculous is that this user did not register their Pixel 4 in any of the Android 13 tests. Thus, they were far from accessing this or any other version of the new Google system that was not even released. more. .

In the description he provided on various internet channels, the owner of this Pixel 4 said that he had problems with the smartphone from that moment on. The worst of them was even a clear incompatibility with the Play Store. Reinstalling the app and even resetting the Pixel 4 didn't fix the problem.

Even though this seems to be the only known case with Android 13, this is a seemingly normal situation. In previous years and in different versions, there were reports of situations where users of Pixel smartphones inadvertently received updates.

With Android 13 almost ready, Google is accelerating its pace of development. The final version should appear soon, thus paving the way for the expected update, both for the Pixel and for all other smartphones in the Google system.

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Blocks R21

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Blocks R21

Portuguese 3D printer startup Blocks will release a new model, the Blocks R21, which is due to hit the market in September. Fortunately, we were able to test the device already in its final version, which showed an impressive evolution compared to the previously tested model. One MKII.

This new printer features an all-aluminum construction, an LCD touch panel that allows you to control all printer settings. Among them is the calibration of the print tray, which, in addition to heating, has a metal coating with a texture that greatly contributes to the adhesion of the filament during printing.

Another important detail is the integration of all the main printing elements in one module, such as a two-block extruder and a hot end. The latter has a threaded screw for quick replacement, which allows you to replace the module with another one with a nozzle that is compatible with a particular type of filament. The variation can be from 0.2 to 1 mm – the hot end supplied with the printer is equipped with a 0.4 mm nozzle. This is to provide better print quality based on filament type, from traditional PLA to ABS, Flex, PETG, nylon, fiberglass, carbon fiber reinforced PET, PLA with metal or wood.

In terms of use, the Blocks R21 couldn’t be simpler and more intuitive thanks to the aforementioned LCD touch screen and a new tray that is easy to calibrate and requires a minimum amount of glue liquid (varnish). The fact that it uses an almost closed rigid construction, together with the integration of all units into a single module, made it feel quieter: it was even the quietest I have tested to date. Blocks R21 is priced to be considered “premium” and is available in a basic version, already with all the accessories you need to get started printing right away. However, we can buy it with an optional connection kit which, while pushing the price up to a less than pleasant €1,800, adds a Wi-Fi controller, webcam and temperature sensor so you can monitor print status remotely.

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Distributor: Blocks

Price: €1575


Data sheet

Print area: 210 x 300 x 250 mm
print speed: 60 mm/s
Connections: USB, SD card, WiFi
Compatibility: Windows, MacOS, Linux
Additionally: power cord, USB cable, USB stick, spatula, tweezers, calibration paper, adhesive spray,
Dimensions: 470 x 350 x 490 mm
Weight: 18 kg


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