*Capacity: 256mb/512mb/1gb/2gb/4gb *Interface: Hi-Speed USB (USB 2.0) *Power Supply: USB bus power (no external power supply) *Op system: Win xp / Win 2000 / Win ME / Win 98SE / Win 98 / Mac OS 9.0 and higher *Dimention : 40 x 17 x 4.6 mm *Weight: 3g *Accessory: Main Unit, Storage Case, Lanyard