and high quality. Made of high-quality materials. It suit for Bafang,for BBS01 02HD for G320 G340 M400 M620middrive motor LED Simple Waterproof Display, UART Communication Protocol good compatibility for Bafang MidDrive,design for style for moto controller This display has simple functions, including power display, shift selection, 6KM/H auxiliary push, headlight switch, basic functions, other functions can not be supported. Easy to use and install,Good compatibility. Weight:About 50g/set UART:yes Product Name:simple display Size:approx 10x5x3Cm The product batches are different, the appearance may be different, but it will not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 x electricdisplay controller