Functions as both a high-speed card reader and a protective memory card case. With a built-in USB 3.1 chip, the transfer speed is up to 310MB/s. SD and TF dual card slots support simultaneous data transfer. Can store SD cards*4, TF cards*6, Nano SIM cards*2. Suitable for users of cameras, smartphones, drones, action cameras. Made of one-piece aluminum alloy. IP54 protection. Compatibility: Devices: Cameras, smartphones, drones, action cameras. Memory Cards: Compatible with UHS-, SD 4.0 Norm: UHS-II, SDXC, SDHC, SD cards UHS-I, SDXC, SDHC, SD cards UHS-ll, Micro-SDXC, Micro-SDHC, Micro-SD cards UHS-l, Micro-SDXC, Micro-SDHC, Micro-SD cards System: for 7 and later, for OS 10 and later, for Linux, for Android, for OS. Note: Data transfer applies only to Type-C port phones and tablets that support OTG; To connect to a desktop computer, a Type-C to USB-A adapter is required. Due to different product batches, the appearance may vary, which does not affect the use. Color: Black Material: Aluminum Alloy + Silicone Package Contents: 1 * Card Reader Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowed measurement error is +/- 1-3 cm.