The Unique Iron Man Model USB 2.0 Enough Memory Stick Flash pen Drive 64G USB 2.0 Hot Plug & Play Compatible Power Source: USB bus-powered (4.5V ~ 5.5V)Operating Current: &lt;50mA computers, Macintosh, PowerBook, iMAC or iBook. Endurance: 1,000,000 times rewritable; Speed: High-speed read and write