For Valued Customers:
1.Is the usb flash drive real capacity? Sure,Our usb flash drive is the real capacity,you can use the H2text to text it. H2text is most authoritative testing software in the world.If you need this software,we can free provide to you. 2.what is the write speed? 16GB/32GB/64GB: Read 35M/S Write:15M/S The speed is different on different computer, it is determained by the performance of the computer. 3.Why the USB flash drive real capacity is not correct capacity? Flash memory vendors are using decimal arithmetic:1MB = 1000KB,1G = 1000MB calculated, the operating system using binary arithmetic:1MB = 1024KB,1GB = 1024MB; so there are some differences between display capacity and nominal capacity of flash memory product 4G is about 3.6G; 8G is about 7.2G ; 16G is about 14.4G ; 32G is about 28.8G; 64GB is about 58GB 4.How can i track the package? It\'s recommended 15- 60 working days by Ali-Express for this shipping method, but depends on the address,(Only Brazil especially 90days). if you dont extend the time any more,or the package confirm the delivery of automatic. As above reasons,we cant accept this negative feedback!!!! No matter track or not track you will receive in the same time.