This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information.
Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes.The pursuit of the perfect person is not recommended to buy.
Regarding the speed：
the speed in our detailed picture is the highest speed of the memory card, and please use a USB3.0 card reader to plug in the 3.0USB interface of the computer to test, otherwise the speed will be lower
Package :
1 X memory card
On 1-Dec-2023 at 05:29:19 EST, seller added the following information:
