SMD stands for a type of packaging, while 2835 belongs to a type of LED bead that measures 2.8mm x 3.5mm, hence the name. This strip is usually sold in rolls containing multiple LED beads per roll, commonly 60 lights per metre, 120 lights per metre and 180 lights per metre, which can be cut or connected as required.2835 strip is favoured for its high brightness, uniform light emission, superior energy efficiency and smaller size, and is widely used in home lighting, commercial displays and background lighting.