Digi-Chip HIGH SPEED 16GB UHS-1 CLASS 10 Micro-SD Memory Card for HTC One M8, HTC Butterfly S, 8XT and One Max cell phone High Speed 16GB UHS-1 Micro-SD Memory Card Class 10 Made using full capacity Samsung memory chips Ideal high speed memory card for mobile devices Full Sized SDHC adaptor included Lifetime Warranty