Sony announced the product on Thursday, and said it will be available in Japan from August 20 in 16GB, 32GB, and 64GB versions. The backup software will initially support only Windows-based machines. The cards are rated Class 4 speed, a standard that provides write speeds of at least 4MBps.
The company is still considering if and when it will launch outside of Japan, a spokeswoman said.
The largest 64GB version will cost around ¥14,000 ($140). That is about the three times the current price of a blank 64GB SD memory card with similar specifications. The software on the Sony cards also takes up about 10 percent of the space: the 64GB card provides about 57.6GB for user storage.
Developers have created versions of complete operating systems that can run off of SD cards or USB thumb drives, including versions of Debian Linux.