Premier Pro microSDHC memory cards are designed for dash recorders and action cameras, making them ideal for repeated writing and rewriting, such as daily vehicle recordings. They also meet the A2 standard for faster and smoother app performance. With the V30 video speed class, you can record at a minimum speed of 30 MB per second. To ensure consistently high quality, the Premier Pro microSDXC/SDHC UHS-I memory cards are waterproof, shockproof, and resistant to X-rays and extreme temperatures, allowing you to take them even in harsh environments.