The Sandisk Ultra 32 GB micro sd card does not work with Motorola Droid phones. It lasted less than a month before it crashed, wiping out all pictures and music etc. Now it is unusable, even for other devices. As I found out - a little too late - this is a known issue for this particular size. A company like Sandisk should provide a warning on the packaging, not to use with certain phones. $25 well wasted :-(
I checked the card when received with h2twstw 1.4. It showed slightly slow write speeds compared to the class 10 spec but acceptable. Card shipped with a SanDisk adapter in a generic case but card wouldn't work with adapter-it did work with another I had. Capacity verified correct, appears to be a good SanDisk card.
If you're thinking of getting the 64gb version, think twice! I got one and it kept needing to be reformatted thus losing my data. After having it I looked around online and lots of folks have this problem with sdxc especially when used in phones.
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SanDisk® Ultra® microSDHC UHS-I Memory Card (32GB**) with SD™ Adapter
Class 10 rating and UHS Speed Class 1* for seamless Full HD1 video
Experience faster app loading and improved performance for smartphones and tablets
Durable card is waterproof, X-ray-proof, temperature-proof, and shockproof4
Includes SanDisk Memory Zone App3 for Android
SD adapter for use with digital cameras
Seamless Full HD1 Video with Class 10 Speed Rating
With a Class 10 speed rating and a UHS Speed Class 1 (U1) rating*, the SanDisk® Ultra® microSDHC UHS-I Memory Card (32GB**) with SD™ Adapter offers exceptional video performance. You'll be able to capture uninterrupted Full HD1 video (1080p), so you can record memories worth watching again and again.
Faster App Loading, Exceptional Performance
This memory card brings enhanced performance to your smartphone or tablet. Its 30MB/s2 read speed and fast bus interface means your stored data will be retrieved almost instantly. You'll experience faster app loading and smooth app performance.
Additionally, fast data transfer speeds reduce your wait time when moving large files back and forth between the card and your smartphone, tablet, or computer.
32GB Capacity for Storing Apps, Videos, Music, and More
Whether you want to store Full HD videos, apps, photos, or MP3s, the SanDisk Ultra microSDHC UHS-I Memory Card can accommodate your memory-intensive mobile files. With its 32GB capacity, this memory card can store a whole library of music, videos, and apps.
Comes with File-Management App for Android
With the included SanDisk Memory Zone app3, you can access, view, and back up digital files stored in your phone's memory, your added memory card, and cloud service accounts. It's easy to move files between the memory card and a variety of cloud-storage options.
SD Adapter for Extra Versatility
The included SD adapter lets you use this microSDHC card with many digital cameras. Move photos and files between devices or expand your camera's storage.
Designed to Withstand Harsh Conditions4
Shockproof, waterproof, and X-ray-proof, the SanDisk Ultra microSDHC UHS-I Memory Card operates from -13 to 185 degrees Fahrenheit.
Warranty and Compatibility Information
The SanDisk Ultra microSDHC UHS-I Card works with any microSDHC or microSDXC compatible device. The included SD adapter allows the card to be used with SDHC and SDXC compatible devices.
The SanDisk Ultra microSDHC UHS-I Memory Card is backed by a lifetime limited warranty5.
SanDisk Ultra microSDHC UHS-I Memory Card (32GB) and SD adapter.
ADD STORAGE TO YOUR MOBILE PHONE and bring your digital life wherever you go