http://www.techradar.com/news/western-digitals-new-400gb-monster-is-the-worlds-largest-capacity-microsd-card

Western Digital has unleashed the biggest microSD card the world has ever seen, offering a mammoth capacity of 400GB at IFA 2017 in Berlin.

The 400GB SanDisk Ultra microSDXC card is double the size of the firm’s 200GB card, which itself was a record-breaker when it was introduced two years ago (there’s also a 256GB model sitting between these two cards).