Product Review: SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-512G-GN6MA The SanDisk 512GB Extreme microSDXC UHS-I Memory Card is a high-performance memory card that is designed for use in devices such as cameras and smartphones. The card has a capacity of 512GB, which provides ample storage space for storing photos, videos, and other files. One of the key features of this memory card is its speed. It has a read speed of up to 30MB/s and a write speed of up to 80MB/s, making it ideal for use in devices that require fast data transfer rates. Additionally, the card is rated as UHS-I Class III (V30), which means it can handle high-speed video recording and playback without any issues. Another important aspect of this memory card is its durability. It has a waterproof rating of IP68, which means it can withstand being submerged in up to 2 meters of water for up to two hours. This makes it ideal for use in extreme environments such as underwater photography or outdoor activities. Overall, the SanDisk 512GB Extreme microSDXC UHS-I Memory Card is a high-quality memory card that provides fast data transfer rates and durability.