He aquí las caracteristicas: Product Description Sony 4GB Pen Drive 4GB USB Micro Vault Classic USM-N Model - Black body with polished and textured combination surface create a stylish impression. Device is easily recognized automatically when you connect it to a USB port. Power will be supplied through USB port, without the need for an AC adaptor. •4GB Storage Capacity •New simple and stylish model with retractable USB connector •Hi-Speed USB 2.0 for a convenient transfer of large files •Plug and Play General Interface High Speed USB 2.0 (USB 1.1 compatible) Port Type Type A USB port Power Supply USB bus power (no external power supply) Compatible OS Windows®7 Home Basic or Premium/Professional/Enterprise/Ultimate/Starter,Vista® Home Basic or Premium/Business/Enterprise/Ultimate/Starter,XP Professional/Home, 2000 Professional,Mac OS® X 10.4-10.5. Capacity 4GB Operating Temperature Range 0 - 35degrees Operating Humidity Range 20 - 90% (with no condensation) Storage Temperature Range -10 - 60degrees Storage Humidity Range 20 - 90% (with no condensation) External Dimensions 20.9 x 9.5 x 67.4 mm Weight Approx 11.5g Accessories Main Unit, Operating Instructions