U158-B Glass2 Unit M5Stack U158-B Glass2 Unit is a 1.51″ transparent OLED display unit with a built-in solder pad that allows the user to change the communication address to 0x3D. This display unit adopts the SSD1309 driver solution and supports the I2C communication interface. The U158-B unit features a 42mm x 27.16mm glass area, 35.5mm x 18mm display area, a 128x64 pixels resolution, and 256-level brightness control. This unit improves refresh efficiency and enables faster content updates or responses to input signals. The U158-B unit offers smoother and more fluid images or animation displays. This unit includes a Glass2 unit and a Grove cable (20cm).