[DETAIL] Features: 1. Storage capacity : 16GB 32GB 64GB 128GB 2. Port :USB 3.1 3. Write/Delete protection switch 4. Fast transmission speed,speed:25--100M/s 5. Solid state storage, shockproof and electromagnetic proof 6. Hardware requirements :PC with USB port, laptop, MAC About capacity: Flash manufacturers use decimal arithmetic :1MB = 1000KB, 1G = 1000MB, but operating systems use binary arithmetic :1MB = 1024KB, 1GB = 1024MB So flash products display capacity and nominal capacity is different However, it is allowed to exist. Please don't doubt his authenticity 16 GB = about 14 GB -15 GB 32 GB = approximately 26GB - 29 GB 64 GB = approximately 55GB -59 GB 128 GB= approximately 95GB - 1 10 GB Speed: 32GB /64GB/128GB ----- Speed measurement results for different conditions, the use of software, copy of the file type, speed measurement results are different [ATTRIBUTES] - Hign-concerned Chemical: None - Package: No - Model Number: Flash Disk - Hign-concerned Chemical: None - Package: No - Model Number: Flash Disk - Product Type: Flash Disk,Normal - Interface Type: USB 3.1 - Brand Name: amzwn - Origin: De(origin)