Samsung 64GB 48MB / s UHS-1 Class 10 MicroSD memory card (Electronics)
this card makes: Read speed: 48 MB / s Write speed: 13 MB / s old design of samsung EVO card, the writing speed is not good enough for a 4 gopro gopro 3+ or black, but should a former smartphone generation nécrivant 2014 in less than 20m / s, the 201