Anti-crush Alloy Shell Metal material brings better heat dissipation and shielding. Upgraded Production provides stronger protection.Wide Support Support Micro SD, Micro SDHC, Micro SDXC, SD/SDHC/SDXC, MMCII/RSMMC. Maximum storage up to 128G.Phone/Tablet OTG Connection Use OTG adapter/converter cable to enjoy smooth film watching and online chatting.Expansion Assistant of Computer Easy work under overload status. Three USB simultaneous connection and reading. More interfaces meet all needs.High Transfer Speed Just need 5 seconds to transfer 1G film. The practical speed up to 200M/S. Tinned copper and dual shielding ensure high signal transmission.