Dear customer, If you want to buy more than 20pcs these at once. You can enjoy a Group Buying Discount and save more money, Please to note your wishing list, wish you happy shopping! Description: : Silver Material: Stainless Steel Net Weight: 22g Size: Approx. 53x13.7x8.4mm Writing Speed: 5-9M/S Reading Speed: 15-20M/S Capacity: 8/16/32 GB Compatibility with: Android, PC Hot plug play Waterproof, dustproof and shockproof Made of high quality stainless steel Compatible with USB 1.1/2.0 Compatible with PC, Notebook, Key Chain Design, make it practical OTG function Store your pictures, videos, and songs and any kind of data. smart phone data cable interface and USB interface, cross-platform conversion. Easy to carry and not easy to lose for its innovative shape Windows 7 / 8,Windows Vista,Windows 2000, OS X, Linux. Small style and fashionable products, as an impressive gift for your beloved, friends or even customers. a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a