... writing and reading speed ROHS/CE silicone usb bracelet Capacities* – 32MB,64MB,128MB,256MB ... 16GB, 32GB,64GB,128GB,256GB,500GBOperating Temperature – 32°F to 140°F (0°C to 60 ... 3~5MB/sec. writeSimple – just plug into any USB portConvenient – sturdy loop supports most key ringsHandy – ... Windows 2000, Windows Vista, Windows 7Accessories – Manual , USB cable, lanyard, keyring (optional) Certification:CE,FCC, ...