It is designed for the advanced phone OS. Supports newest smart phones and tablets、 and gives high speed mobile storage experience for you easily. Supports UHS-I. High read and write rate makes snapping playing video more quickly、 and improves application performance. All that makes your favorite device to load application program and change performances in shorter time. Also working with SD adapter、 it is compatible with the devices which have TF or SD card slots. Working voltage: 2.7~3.8V. Dimensions: 0.59 in x 0.43 in x 0.04 in (1.5 cm x 1.1 cm x 0.1 cm) Weight: 0.01 oz (0 g)