This LED desk lamp unfolds from a compact 12.5 x 7.5 x 4.5cm into an upright lamp with 24 LEDs. The ratcheted upstand stays exactly where its positioned, and the super-bright lamp is controlled simply by touching the base. Touch once to deliver 30% of its total light output, touch again for 50%, next its full power, then touch again to turn it off. Powered by 4 x AA batteries (not included) or via a 1 metre USB cable (supplied). Measures 12.5 x 7.5 x 4.5cm when folded 24 LEDs Touch control. - mysmartbuy Folding LED Touch Control Lamp - Battery or Mains Powered Super Bright Compact Portable Desk or Bedside Table Light with 24 LEDs in White