Due to different capacity algorithms and partial capacity are used for system files, management and performance optimization, so the actual available capacity may be less than the identifying capacity.
Acording to the different algorithms, Mathematically 1GB = 1000MB = 1000x1000KB = 1000x1000x1000 bytes, all the manufactor use this way to mark the capacity.
Ultra Speed Data Transfer
Supports up to 100MB/s read speed and standard write speed for data transfer.
Extended compatibility
Compatible with all SD and wide range of full-size SD application if own suitable SD adapters.
Durable and Stable
More features:
X-ray Safe
Anti-shock
Anti-dust
Extreme Temperature Safe
Anti-static