1Double as a high-speed card reader and a memory card case2 With a built-in USB 31 chip, the transmission speed can reach 312MBS3 SD and TF dual card slots support data transfer at the same time4 Type-c interface supports plug-and-play5 can store SD card*4, TF card*4, Nano SIM card*2, as well as an eject pin6 Suitable for cameras, smartphones, drones, action cameras users7 Made of aluminum-alloy shaped at one go 8 IP54 protection9 configured with a rubber case