Note: From 21st October 2020 onwards, 16GB, 32GB, and 64GB microSD are from the SanDisk brand.
Note: There are two brands for this microSD card, Panasonic and SanDisk. Both are from the Raspberry Pi Foundation.
Note: This micro SD card comes with Raspberry Pi OS - Bullseye. The new Raspberry Pi OS - Bookworm is still not available for this Official Raspberry Pi micro SD Card.
This is a 16GB, 32GB, and 64GB, Class A1 micro SD card. Preloaded with NOOBS (New Out Of Box Software), and we are taking it directly from Raspberry Pi Foundation. Yes, all the way from the UK.

I am sure many Raspberry Pi users will have 1 common doubt: What type of microSD card is best for Raspberry Pi? Well, we have been asking the same question since day 1:) Now, let's trust the Raspberry Pi team which is the designer and producer of Raspberry Pi. They recommend Class A1 because of the characteristic of Raspberry Pi accessing the memory on the microSD card. The random read and write speed is critical. For details of Class A1, please refer to here.
"But more and more, memory cards are being used to extend the memory of devices that run apps. Devices like smartphones and mobile gaming consoles. The apps that run on these devices interact with memory space differently. Rather than a stream of sequential data, they want to write a lot of small chunks of data wherever there's space available. That's known as random read/write (compared to sequential read/write that's important for video)." which Raspberry Pi falls into, the operating system will need to read/write data from/to the microSD card in random access.
Besides, this microSD card is preloaded with NOOBS. NOOBS (New Out Of Box Software) is an operating system package from the Raspberry Pi foundation. It is the fastest way to have a variety of operating systems on your Raspberry Pi including the latest Raspberry Pi 4 Model B, and the low-cost Raspberry Pi Zero W. You can now boot multiple OS's such as Raspbian, Kodi, OSMC, etc. There's a boot up menu for selecting which OS you like.

This MicroSD card with NOOBS preloaded is compatible with:
Note:
- Starting from Oct 2018, the NOOBS's config.txt is edited (Default from Raspberry Pi Foundation)
- It will install Raspbian by default.
- The OS selection table will only appear if you press the SHIFT key when you see the Raspbian (Raspberry Pi Logo) screen.
If you need the latest Operating System, please ensure your Raspberry Pi is connected to the Internet via WiFi or LAN (Ethernet).
And it comes with an SD card adapter for the ease of accessing micro SD from a computer or SD card reader.
Note: In case you need a USB microSD card reader/writer, get it from here.