Usb flash disk (main spec:) Memory size: 64/128/256/512mb 1/2/4/8/16/32/64gb Interface: high speed usb2.0, compatibility usb1.0 Data retention: at least 10 year, 100 thousand times read and write Customize: 1. Print customer's logo on usb flash drive. Printing method: digital printing, silk-screen printing, laser engraved, uv printing, debossed etc. 2. Make customer's design to be usb flash drive. 3. Preload customer's data and make the data cannot be deleted. 4. Do auto-play. Such as playing your video or open your website while connecting to the computer. 5. Make customer's package and lanyard. 1. 100% full capacity, a grade chip. 2. Reasonable excellent price. 3. Fast delivery, best production time. 4. Best service, your inquiry will be the first priority.