Gift: You will receive a hard disk package
ast transmission speed:
About capacity:
8GB=approximately 7GB-7.5GB
16GB=approximately 14GB-15GB
32GB=approximately 28GB-30GB
64GB=approximately 58GB-60GB
128GB=approximately 115GB-119GB
256GB=approximately 230GB-238GB
500GB=approximately 440GB-460GB
1TB=approximately 900GB-940GB
2TB=approximately 1800GB-1900GB
4TB=approximately 3600GB-3800GB
This is calculation difference between manufacturer(1GB=1000MB) and our PC(1GB=1024MB),
please Google Memory card capacity to get more information