SanDisk SDSDQUN-064G-FFP-A Ultra Android 64GB microSDXC UHS-I Class 10 Memory Card + SD Card Adapter up to 48MB / sec. Read [Amazon Frustration-Free Packaging] (optional)
Works in my Dell Venue 8 Pro flawlessly without any errors. The map, as described by some reviewers, not intended to last, I can not confirm at the moment. I've always really good experience with SanDisk and bad made with other manufacturers