One day only: SanDisk Ultra 64GB Class 10 microSDXC Memory Card for $44.99

Best Buy has a one-day only sale on a fast Class 10 microSDHC card from Sandisk, running $44.99 including free shipping.

Of course, don't forget to add in sales tax in most locations. The deal is good for Sept. 13 -- yes, Friday the 13th -- only.

The SanDisk Ultra 64GB Micro SDHC Memory Card (Class 10) is on sale for a low $44.99 Free Shipping. Tax in most. This normally retails for $99.99 at Best Buy.

The deal is available online, here.

MicroSD is the expansion card format supported by most of today's smartphones and cell phones. Notably, Apple has long eschewed expansion cards on its iPhone and iPad devices, but Android and WIndows Phone devices generally have slots available.

It's a bit confusing, as the image of the card refers to it as Ultra, but the text of the listing refers to it as Pixtor. In addition, the image has a I on it, implying the card is a UHS-I card, not "just" Class 10. It also refers to is as microSDHC although the image clearly shows microSDXC.

The card is described as follows at BestBuy.com:

This SanDisk Pixtor microSDHC memory card features a rugged design for protection against water, shocks up to 500Gs, magnets, x-rays, vibrations and temperatures between -13° and 185°. The 64GB capacity provides ample storage for media files.

The same card at Newegg.com (also charges sales tax in most states) is clearly listed as Class 10 / UHS-I.

According to Transcend, a leading vendor in storage solutions,

For professionals, memory cards are never fast enough. Now we have new options: SDHC UHS-1 and SDXC UHS-1 memory cards.

UHS stands for Ultra High Speed. The symbol can be found exclusively on SDXC and SDHC products. UHS-I is the fastest category of card available today with a bus interface speed of up to 104 MB/s, while UHS-II is expected to reach 300 MB/s. SDXC UHS-I and SDHC UHS-I memory cards can achieve best performance when paired with a UHS-I device and are designed to allow consumers to record HD resolution videos, plus perform other simultaneous recording functions.

For comparison, Transcend posted a table of differences between the two. A Class 10 card will have seq. reads of 22.59 MBps and seq. writes of 14.02 MBps. A UHS-I card will have seq. reads of 65.79 MBps and seq. writes of 18.79 MBps.

Of course, your mileage will vary.

In addition to the card, the deal includes an adapter to allow the microSD card to be used in SD card situations.