Aisster(TM) USB 2.0 Flash Memory Stick Pen Drive 4GB 8GB 16GB 32GB Waterproof Metal Key Bottle Opener Size: Approx.71x33x5mm Compatible with USB 1.1/2.0;Compatible with PC, Notebook, MAC Support Windows 7 / 8,Windows Vista,Windows 2000,Mac OS X, Linux. Small style and fashionable products, as an impressive gift for your beloved, friends or even customers.