The delkin devices sd 1900x uhs iuhs ii u3 memory card transfers at speeds surpassing 285mbs and works flawlessly in sd cameras that take class 10 uhs i or uhs ii sd memory cards with write speeds of 100mbs the 1900x sd card is designed to keep up with everyday shooting as well as advanced modes like hd video 4k video and raw burst furthermore the sd 1900x uhs iuhs ii operates more efficiently to draw 30 less power from your camera or camcorder so your battery lasts longer and keeps