Review on SanDisk 128GB Ultra Dual Drive m3.0 - Android & Computer microUSB, USB 3.0 - SDDD3-128G-G46, Black by Buana Bono ᠌

Design is quite cumbersome; the frame is not permanent, and you must hold the central section when you insert it into the connector. It gets hot like an iron, and you risk getting burned. Writes and reads rather quickly; however, if using USB3.0 instead of USB2.0, it will likely be faster. About 60 MB per second is written at first, then 13 MB per second after a minute, and so on until the recording is finished. With reading, the situation is analogous.