A16S LED clamp desk lamp features highly adjustable swing arm. The lamp head can be adjusted 180° up and down, and 350° swivel. 13.7+13.7″ extendable long arm and folded to 15.7″. The strong metal clamp can be fixed on any flat surface for space saving. Double click the touch control to switch between 3000k (warm white) and 5700k (white). Adjustable brightness from low to high to satisfy your different lighting needs. It’s suitable for reading, office, drafting, architect,etc.