?Excellent from inside to outside?4GB USB flash drives ( due to different calculation methods and program operation requirements, the actual available capacity is 3.74GB ) adopt A+ chips from international top brands for better reading and writing speed! Writing speed: 7-9MB/S & Reading speed:25-30MB/S; Clips are made of colored aluminum, they are less prone to rust than iron clips?Widely used?Schools, Colleges, Universities, Commercial, Education, Government, Agency, Media Industries, Engineering, Healthcare, Construction, CPA, Attorney, Photography and Other Use. Good gifts for family, colleagues, friends and bussiness. ?Rotated & Keychain Design?: Portable, samll and lightweight thumb drives with aluminum clip rotates 360° round the ABS plastic body which with rubber oil skin feeling.The end of the memory stick has a loop that can easily be attached in your keychain, backpack, lanyard. Small size-2.3*0.75*0.43 inches ~ keep your digital world in your pocket and take your data anywhere. ?Wide Compatibility & Multi Format Supported?Compatible with USB2.0, backwards USB1.1- Swivel 4GB USB flash memory sticks can be used in computer, TV, speaker, notebook, car audio and other USB devices. Supports Windows 7 / 8 / 10 / Vista / XP / 2000 / ME / NT Linux and Mac OS. Save data of MP3, MP4, RMVB, EXCEL, WORD, PDF, Image and other files. ?Save Time?Plug and play, U disk does not require any drivers to be installed. The most important thing is to ensure the security of your data: Portable 4GB USB thumb drive is suitable for storing, transferring and sharing digital data for work, school, business, daily usage or traveling. Such as music, photos, movies, pictures, books, programs, presentations, designs personal data and documents etc. ?Excellent from inside to outside?4GB USB flash drives ( due to different calculation methods and program operation requirements, the actual available capacity is 3.74GB ) adopt A+ chips from international top brands for better reading and writing speed! Writing speed: 7-9MB/S & Reading speed: 25-30MB/S; Clips are made of colored aluminum, they are less prone to rust than iron clips.