The 400GB SanDisk Ultra microSDXC UHS-I card was unveiled on Thursday morning at the IFA 2017 conference, offering 144GB more storage than any other microSD card on the market. The new card also supports 100MB read speed, A1 app performance, and UHS Speed Class 1 for the best performance available.

“We continue to push technology boundaries and transform the way consumers use their mobile devices,” said Sven Rathjen, vice president of product marketing at SanDisk’s parent company, Western Digital. “By focusing on achieving new technology milestones, we enable consumers to keep up with their mobile-centric lifestyles with storage solutions they trust.”

As you can imagine, this brand new 400GB microSD card isn’t cheap, though it’s also not as expensive as some might think. SanDisk’s 256GB card has a full retail price of $199.99, and it typically sells for about $130 at retailers like Amazon. The new 400GB SanDisk Ultra microSDXC UHS-I card has a full retail price of $249.99, $50 higher than the 256GB model, and it goes on sale beginning today.