SD card, UHS-I Class 10 V30 U3, 256 GB. Read speed: 100 MB/s, Write speed: 40 MB/s. Fast enough for recording in Full HD or 4K. Ideal for long-term video recordings from home surveillance and security systems. Designed for a recording performance of 20,000 hours, making it particularly durable. Temperature resistant, waterproof, shockproof, and x-ray proof. Includes SD adapter. UHS-I bus system. UHS-I compatible SD cards allow for theoretical data transfer speeds of up to 104 MB/s. The speed class is indicated as U1 or U3: U1 for Full HD videos and U3 for 4K videos. SD cards with UHS-I support are backward compatible and can be used in devices without UHS support (with limited performance).

The Video Speed Class includes five speed levels: V6, V10, V30, V60, and V90, with the number indicating the minimum write speed in megabytes per second (MB/s). By combining a device with a Video Speed Class designation and an SD memory card with the same Video Speed Class designation, you can capture memories in the best quality. The fastest options, V60 and V90, support 8K resolution, while V6, V10, and V30 reliably capture Full HD and 4K resolution.

The Speed Class indicates the minimum continuous data transfer rate when writing video files to a memory card. The Speed Class number shows the transfer rate in megabytes per second. Class 2 cards are designed for a minimum continuous transfer rate of 2 MB/s, and Class 10 for a minimum continuous transfer rate of 10 MB/s. The speed class is divided into classes 2, 4, 6, and 10. For Full HD video (1080p), a minimum of Class 6 is recommended.