The 64GB microSDXC Memory Card Premium 300x Class 10 UHS-I with microSD Adapter from Transcend features maximum read and write speeds of 45MB/s and 25MB/s, respectively. Its Ultra High Speed Class 1 (UHS-I) bus interface enables it to achieve these speeds, which are far greater than the 10MB/s minimum speeds guaranteed by the Class 10 rating. A microSD adapter is supplied, allowing you to use the card in a full-size SDHC/SDXC slot. The card features built-in Error Correction Code (ECC) to automatically detect and fix transfer errors. It is backed by a limited lifetime warranty.

Card Type	microSDXC
Storage Capacity	64 GB
Speed Class	10
UHS Speed Class	U1
Speed (X-rating)	300x
Bus Interface Speed	UHS Class I
Data Transfer	Read Speed 45 MB/s Maximum Write Speed 25 MB/s Maximum
Durability	Not Specified By Manufacturer
Insertion/Removal Cycles	10,000
Operating Temperature	-13 to 185°F/ -25 to 85°C
Storage Temperature	Not Specified By Manufacturer
Error Correction	Yes
Built-in Write-Protect Switch	No
File System	exFAT
RoHS Compliant	Not Specified By Manufacturer