Model No.: MUD-41 Series 4 IN 1: USB Pen Drive + Laser Pointer + LED Flash light + Ballpoint Pen Specification: - USB Pen Drive Compliant with USB 1.1 and 2.0 - Capacities Range：From 128MB To 2GB - Data Transfer Rate： USB 1.1： Read Speed -1000KB/Sec. Write Speed - 900KB/Sec. USB 2.0： Read Speed -18MB/Sec. Write Speed -13MB/Sec. - Data retention：Up 10 years - Real hot plug-and-play operation - Boot-up with the support of PC BIOS - Support partitioning and security password - Blue light LED indicator. - No external power supply required 　 System Requirements : - Any computer that supports USB 1.1 or USB 2.0. - Computer with one of the operating system below - MS Windows XP, 2000, Me, 98l MAC OS 9.0 or later - Linux kernel 2.4 or later　 Black or Blue Ballpoint Pen (D1 Size) Body Material : Brass Alloy