Transfer speeds up to 30 MB/s**Up to 30MB/sec read speed; write speed lower. Based on internal testing; performance may be lower depending upon host device. 1 megabyte (MB) = 1 million bytes.
Highest video recording performance with Class 10
UHS Speed Class 1 (U1) rating**UHS Speed Class 1 designates a performance option designed to support real-time video recording with UHS-I enabled host devices.