Design and Build
The design of the Sendo M550 is compact and practical, a testament to the early 2000s aesthetic with dimensions of 82 x 45 x 20 mm and a lightweight build at just 77 grams. Its small size makes it easy to handle, fitting comfortably in the palm or pocket, which is a distinct contrast to the much larger smartphones of today. The device sports a monochrome styling with an uncomplicated layout, featuring a typical T9 keypad that characterized most phones of that era.