16G high-speed memory card SD Card TF card - 25pcs

16GB=approximately 14GB-15GB
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.
Class10: Read speed around 15-35MB/S ,Write speed around 9-12MB/S
Digital memory cards can be used in: smart early education machines, reading machines, point reading pens, voice recorders, children's cameras, night vision devices, drones, children's toys, video doorbells, sports cameras, navigation, cameras, monitoring, driving records Instruments, cameras, mobile phones, PSP game consoles, Bluetooth speakers, mp3, MP4, amplifiers, SLR and other digital products.