Pendant USB flash drive with 18K gold plated or silver plated or antique plated finish Capacity: 128MB~4GB USB Interfaceú¦highú¡speed USB2.0/USB1.1 Storage Medium ú¦high-class chipset USB Connectionú¦Plug play/Supports hot swap Data Protection and Encryptionú¦Optional Perating Currentú¦ Suspend Currentú¦ Voltageú¦4.5V~5.5V Read Speedú¦11MB/S Write Speedú¦8MB/S Built-in LED Indicatorú¦Flashes when the disk is reading or writing data. Operating Systemú¦Windows 98/SE/Me/2000/XP,Linux 2.4.0,Mac OS 9.x or Above. Data Retentionú¦Up to 10 Years. Ambient Tempú¦-10íµí½+55íµ Storage Tempú¦-20íµí½+55íµ Operation Relative Humidityú¦20%í½90%(40íµ) Storage Relative Humidityú¦20%í½93%(40íµ) EMI Complianceú¦ROHS/FCC/CE Product Size(LxWxH)ú¦3.8cmX1.9cmX0.95cm Materialú¦Metal Weightú¦26.7g Packingú¦PET Blister