JASTER Free Custom Logo USB Flash Drives Photography Studio Pen Drive 64GB Wooden Box Memory Stick Wedding Gift Pendrive 32GB Personalized customization USB stick 16GB Walnut wood Box Storage Devices 8GB Portable External storage 4GB

JASTER 16 GB 32 GB 4 GB 64 GB 8 GB. About capacity: 4GB approximately 3.6GB-3.9GB. 8GB approximately 7.4GB-7.8GB. 16GB approximately 14.2GB-15GB. 32GB approximately 28GB-30GB. 64GB approximately 58GB-60GB. 128GB approximately 110GB-120GB. 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. So there are some differences between display capacity and nominal capacity of flash memory products