This waterproof card reader enables high-speed data transfer. I purchased it on Amazon and used it for about two months, but I'm selling it because it didn't suit my needs. Operation has been confirmed. There are no noticeable scratches or stains, and it's hardly been used. All accessories are included. The following is from the Amazon sales page: 【Simultaneous SD and microSD Reader & 5Gbps Data Transfer】The llano 2025 upgraded card reader supports the UHS-II standard and can simultaneously read SD cards and microSD cards. With a UHS-II compatible SD card, you can quickly read large data such as high-resolution images and 4K videos (approximately 3 seconds for a 1GB file). *Varies depending on the actual situation. 【Compatible with Various SD Standards & Devices in One】This microSD card reader can be used with both Type-C and USB. It is designed to work with a wide range of devices, including computers, tablets, and smartphones. It supports SD/SDHC/SDXC/MicroSD/MicroSDHC/MicroSDXC standards up to 4TB. The llano high-speed card reader meets all your storage needs. 【Storage Protection & Solves Storage Problems】The storage case design features slots for 8 microSD cards and 4 SD cards, eliminating the worry of losing or damaging memory cards. Not only can it solve the problem of insufficient memory card capacity, but it also allows you to save important files from your smartphone or computer to a memory card, making it ideal for photography enthusiasts, home use, and locations where surveillance camera footage needs to be stored. 【Easy-to-See Operation Status & Excellent Durability】With an access lamp, the blue LED lights up when connected, and the green LED lights up during data transfer, allowing you to easily see the connection status. It features a silicone case to protect against impact and water, and a high-durability nylon braided Type-C cable. The port has passed 10,000 insertion and removal tests, ensuring reliable product quality. 【Comprehensive Contents & Reliable Warranty】Lightweight design for easy portability! Includes a carabiner, waterproof and dustproof seal ring, and a USB-A adapter. In addition to being able to attach it to your bag for instant access, it also protects recorded data from rain and dust. It ensures compatibility with both new and old devices and can be used as an immediate asset for outdoor photography.