Speed that keeps up with 4K
V30 means the card sustains at least 30 MB/s while recording video, which is exactly what drones and action cams shooting 4K need. Reads of up to 200 MB/s go beyond the usual 104 MB/s limit of the UHS-I standard. With writes of up to 100 MB/s, large files land on the card quickly. The A2 class helps apps and games installed on the card start faster on a phone or tablet.