RAOYI 10 Pack 4GB Metal Key Shape USB Flash Drive, USB 2.0 Memory Stick Thumb Drives Jump Drive-Silver

Brand Name:RAOYI Product Name:RAOYI 10 Pack 4GB USB Flash Drive USB 2.0 Metal Thumb Drives Mini Waterproof Jump Drive Memory Stick Key Shaped Silver Net Weight:about 7 g/item Durability: 50,000 times read and write Chip:Grade A, original brand flash memory chip Unit size: 2.0" x 0.47" x 0.14" (51mm x 12mm x 3.5mm) Operating Temperatures:32? to 140?(0? to 60?) Storage Temperatures: -4? to 185? (-20? to 85?) Interface:USB 2.0 Compatible (Backwards compatible with USB 1.1) Speed: Writing speed: 3MB/S-6MB/S; Reading speed: 6MB/S-12MB/S Compatibility:Desktop, Laptop, Mac, Tablet, Speakers, Television, Car video system which has USB port and allows data transmission Operating System:Windows 98 second edition/NT/ME/2000/XP/7/8.1/10 and above, it is also compatible with Linux,Mac OS 10.3 and above Tips:The actual available capacity for data storage is less than what is listed on the products. As some of the listed capacity on a flash storage device is used for formatting and other functions, thus is not available for free data storage of users The usable space for each capacity is as below:4GB with usable storage space of 3.74 GB