EFTER 128Gb Keychain USB Flash Drive Pen Drive Memory Stick Pendrive Storage : 128gb Support USB version 2.0 and 1.0 Key chain design - fashionable style - Light weight and foldable - easy to carry - Easy to read and reads in high speed - No need drive/power supply only plug in. Low Power Consumption Durable Solid-state Storage and Data Retention for at Least 10 Years Reading Speed: 12MB/sec Writing Speed: 8MB/sec Operating Systems: Works on all Major Operating Systems Low Power Consumption Durable Solid-state Storage and Data Retention for at Least 10 Years