SanDisk launched the highest capacity micro SD card as of now. This micro SDXC UHS-I card will have a capacity of 200GB, which can store up to 20 hours of FULL HD video. It laso have a high transfer rate which allows you transfer approximately 1200 photos in a minute, that is you can get up to 90MB/s.
This is waterproof, temperature proof, shock proof, X-ray proof and magnet proof. It is a Class 10 video rating so that you can record full HD videos directly in to this.
This product comes with an SD adapter so that you can use it on your cameras too.
SanDisk Ultra 200GB Micro SD card is now available on Amazon.com for a price of $239.02. The site shows a discount of nearly $11 .00.
If you are outside US, this item have international shipping option too, you will have to check the shipping charges. For me it shows INR 639.32 as shipping charge to India and an import fees deposit of INR 2,899.85. Totally it will cost INR 19,658.
Check th product and details on Amazon
For galaxy S3 users, here is an answer on the product page
Based on internal testing, the SanDisk Ultra 200GB microSDXC UHS-I Card works with the following Samsung Galaxy S-III models (when formatted to FAT32):
Samsung Galaxy SIII Mini/ SCH-I535 running Android OS 4.1
Samsung Galaxy SIII AT&T/ SGH-I747 running Android OS 4.4.2
Samsung Galaxy SIII Verizon/ SCH-I535 running Android OS 7.1
Samsung Galaxy SIII GSM/ GT I9300
So I believe it will support the higher versions of Galaxy series for sure.