The Toyo Desk Lamp has a weighted Base the lamp arm attaches to. There are four light modes: Jewellery, Diamond, Jadeite and Gemstone. Each mode brightness can be adjusted using the "- +" button after selecting the desired light mode. In addition is a 60 Minute Timer button next to the on/off button and a USB Charging port to charge a cellphone. Weighted base footprint is 7x7".