USB PEN:
1) Capacity: 64MB, 128MB, 256MB, 512MB
2) Compatible with USB version 1. 1/2. 0
3) Used  flash disk with laser light and LED light
4) Copper housing
5) Hot plug and plays via USB port
6) No external power supply required
7) Write speed: 650kbps
8) Read speed: 958kbps
9) Data retention for over 10 years
10) Supports Win98/Me/2k/XP, Mac OS 8. 6 and above.