... 210*18*2mm, dult size 3.printed logo is available. 1GB or 2GB silicon USB braceletprofessional manufactory with high quality+good price +best ... :4MB-512MB,1GB/2GB/4GB/8GB/16GB/32GB Logo:Print ,debossed or embossed logo are available. Guaranteed :3 years warranty Transfer Rate ... 0 Certified, Compatible USB 1.1 Compatibility :PC,Notebook,Macintosh with usb port Operating System :Windows 7/Vista/XP/2000/ME ...