Flash disk OTG for iphone 2TB, Flash drive 4 in 1 high speed external memory for phone/tablet/android /PC。

About Real Capacity Capacity flash memory products are usually shipped in accordance with 1MB = 1000KB, 1G = 1000MB computing, but the operating system using binary arithmetic 1MB = 1024KB, 1GB = 1024MB, so there are some differences between the display capacity and standard capacity memory products. 8GB = approximately 7.4GB-7.6GB 16GB = approximately 14GB-15GB 32GB = approximately 28GB-30GB 64GB = approximately 58GB-60GB 128GB = approximately 110GB-120GB This is calculation difference between manufacturer and your PC, please Google 'USB Flash Drive capacity' to get more information. Note: 1. It only compatible some Android Mobile which should has Micro usb port and OTG Function . 2. Choose the correct capacity for your lovely device,please make sure your device can support 128GB if you order 128GB.