... usb flash drive 3.material:metal,crystal 1/2/4/8/16/32/64GB Jewelry USB Flash Drive ... 20MB/sec. Read 10-12MB/sec. and write2.5-4 MB/sec.Auto-run, Space partition, Password ... 32GB, 64GB,128GB……Transfer Rate:Hi-Speed USB 2.0 CertifiedCompatibility:PC or Mac with a USB interface ... hard driversSupports multi-partition and password accessLED Light:Dual LED indicates power and working, read/writeShock ...