Chrome battery-powered or direct power this is an great LED piano or desk lamp. Single adjustment arm piano lamp. 10 LEDs with swivelling shade and two brightness levels. Heavy duty metal base with padded bottom. Works with AA batteries (included) orwith the included 5 volt power adapter. Shade width: 30cm (12") lamp height: 40 cm (15.7") - weight 1.5 kg (3.3 lbs without power adapter)