Premier Pro-microSDHC memory cards are designed for dash recorders and motion cameras, and are perfect for repeated write/overwrite operations such as daily vehicle recordings. They also meet the A2 standard for faster and smoother app execution. Thanks to V30 (video speed class) qualification, you can record at a minimum speed of 30 MB per second. To ensure consistently high quality, Premier Pro microSDXC/SDHC-UHS-I memory cards are waterproof, shock-resistant, and can withstand x-rays and extreme temperatures, so you can take them with you even in harsh environments.