High security Built-in over-voltage, over-storm and short-circuit protection protects your high-quality memory cards and USB devices.Besides, the power is supplied directly via the USB port, no additional power supply required either. Two-way transferThe SD card reader for iPhone supports two-way transfer, from SD card to iPhone or iPhone to SD memory cards.It's easy to download photos or videos from SD cards directly to the phone or pad and share videos or photos with friends and relatives anytime, anywhere.High Speed TransmissionThe data transmission speed is very fast.The SD card reader for phone transfers photos or videos from the camera or memory card to the phone or pad at a speed of 20MB/s ~ 30MB/s.It can reach up to 100MB/s, no matter how large the file is, there is no need to worry. Plug and Play No need for third-party applications, no network, plug and play, after connecting iPhone/Pad, you can share happiness with family and friends in real time.Please wait 5 seconds after connecting the device.Wide CompatibilityThe SD card reader supports standard photo formats including JPEG, RAW and 4K video formats including H.264 and MPEG-4.With the SD card reader you get more convenience.