DMGenest | "Genet"
I purchased this Ultra MicroSDHC Class 10 card for my media player. I wanted to replace my 4GB cardwith this one so I could store more music. I like to have a wide range of music to pick from when I amon vacation or traveling on an airplane long distances. I think I may have bought too much.This card is advertised as water-proof, temperature proof, X-ray proof and shock proof. I will have totake their word for it. I am not going to test it.Just for fun I put the 16GB MicroSDHC disc (30MB/s Read Speed) into its provided adapter and used itin my cheapo cheapo Toshiba Camileo HD movie camera. Even at the Full High Definition resolution of1080p/30fps this disc performed very well. No stuttering, no missed frames and all this under low lightconditions. Nice. Very Nice. Those are big files at Full HD resolution. Read on...This card is 'USH-1' enabled which means it is the fastest card available (allegedly) and should reachup to a bus interface speed of 104 MB/s; if the electronic device you are using requires it. Of courseif your card reader or device does not support that speed you will be transferring data at your usualspeed. Sort of like saying it is backward compatible but don't expect blazing speeds. You can feeddata through only so fast.Transferring RAW photos and a Full HD digital film can take a lot of time to transfer. Those are hugefiles to transfer so the USH-I enabled disc is perfect for that purpose. They are working on USH-IIwhich is supposed to allow up to 300MB/s transfers. Talk about instant gratification, we are aboutthere.----------------------------------------------------------------------------------------------Here is a guide by the 'SD Association' with regard to Class ratings and video applications:> Class 2 for SD video recording> Class 4 and 6 for high-definition video (HD) to Full HD video recording,> Class 10 for Full HD video recording and consecutive recording of HD stills> UHS Speed Grade 1 for real-time broadcasts and large HD video files> UHS Speed Grade 3 for 4K video files-----------------------------------------------------------------------------------------------USH-I overkill for a media player? Probably, but for the price it was a terrific deal to get a Class 10USH-1 enabled card and have the flexibility to use it in a variety of my electronic devices. Hmm. Onsecond thought I may just keep this card for the movie camera and get another "slower" one for mymedia player.As usual I have had no problems with this card. Works well, in or out of the adapter, and seems verytough in it's construction. 5 stars for this little power house of a micro card.