Buy lanyard USB flash disk 1) good for promotion with large logo size 2) driverless (except win98) , no external power supply 3) hot plug and play USB interface 4) 16mb-2gb, usb1. 1 or usb2. 0 5) supporting windows 98 / me / 2000 / XP, MAC OS 6) power consumption: A) less than 40ma when working B) less than 300ma when idle 7) LED indicator 8) the lanyard flash drive disk can be written above one million times 9) the flash memory can make 10 years data retention 10) storage media: flash memory