This is being used in a Mobius Action Camera 1080P HD Mini Sports Cam/dash cam daily so the opportunity for failure or problems would be readily apparent.  It has really delivered as promised.  Speed and reliability are great.  The adapter works perfectly as well.  I have several other SanDisk products including SD cards, thumb drives and an SSD and all have been terrific.So far I can highly recommend the SanDisk Ultra 32 GB MicroSDHC C10/UHS1 Memory Card. I will post again if any issues arise.