Double as a high-speed card reader and a memory card protective case. Featuring a built-in USB 3.1 chip, it delivers transmission speeds up to 310MB/s. Equipped with SD and TF dual card slots for simultaneous data transfer. Can store 4 SD cards, 6 TF cards, and 2 Nano SIM cards. Suitable for use with cameras, smartphones, drones, and action cameras. Constructed from one-piece aluminum alloy for durability. IP54 rated for protection against dust and splashes. Compatibility: Devices: Cameras, smartphones, drones, action cameras Memory Cards: UHS-II, SDXC, SDHC, SD Cards; UHS-I, SDXC, SDHC, SD Cards; UHS-II, Micro-SDXC, Micro-SDHC, Micro-SD Cards; UHS-I, Micro-SDXC, Micro-SDHC, Micro-SD Cards Systems: Windows 7 and above, macOS 10 and above, Linux, Android Note: Data transfer is supported only on Type-C port phones and tablets that support OTG. A Type-C to USB-A adapter is required to connect with a desktop computer. Color: Black Material: Plastic Package Contents: 1 x High-Speed SD Card Reader Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.