The 64GB SanDisk Ultra SDXC card comes with a lifetime limited warranty**. The card is available immediately at via the U.S. e-commerce site with a price of $349.99, and will be available at SanDisk locations around the world soon after.
SDXC is the latest type of memory card released in 2010 which meets the demands of FULL HD recording in terms of capacity and speed. The SDXC card has the same dimensions of a SD and SDHC card, but is ONLY compatible with SDXC devices.
All in all, I can recommend this card if you need the storage and have a phone that can use SDXC cards. I've tested in the Note 3, the Xperia Z1s, the Xperia Ultra and the Tegra Note 7 and had no issues other than KitKat "issues." The card should also work fine in the Galaxy S4 series. It's not cheap — — but if you have the need for this much storage you'll be paying for it. Chances are the price will drop when and if other companies start to offer similar products. In the meantime, this is the big daddy many of you have been waiting for — and it works great!