2 In 1 USB Pen Drive Polished and streamline design Compatible with standard ball pen, easy to change and environmentally　　 friendly USB1.1/2.0 Plug and Play Adjustable security levelSystem Requirements:1) IBM PC, Compatible Desktop/Notebook, or Mac computer With USB port. Operating system: Windows 98/Me/2000/XP, Mac OS 9.x/X, Linux 2.4.x Specifications:1) Compliant with USB specification 1.1 2) Built-in LED light3) Reading speed:　950KB/S max. (dependant on computer configuration)4) Writing speed:　800KB/S max. (dependant on computer configuration)5) Data retention: 10 years 6) Dimensions (L x W x H): 14.2 x 1.84cm 7) Weight: 40g (approximately)