Material: metal Dimension: 75mm*30mm*4mm(L&W*H) with PCBA, 75mm*12mm*4mm(L&W*H) with COB Weight: 18g Colors Available: silver, golden LOGO Methods:laser engraving/silkscreen printing Certifications: CE, FC, ROHS M.O.Q.: 50 pieces Delivery time: 3-5 working days 24/48-Hour Rush Service: not available Technical Features: 1) Interface: USB 2.0, or USB 3.0 optional 2) Available capacities: 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB,256GB 3) Data transfer rate(USB2.0): 3-7MB/s for write, 12-15MB/s for read 4) Operating Systems: Windows, Vista, Mac OS, Linux 6) Data retention: 10 Years Minimum