Higashi Smart Natural Light LED Desk Lamp- Piano Black (4 Lighting Modes- Reading, Studying, Relaxation & Bedtime, 5- Level Brightness Control for Each Mode, Touch Control Panel, 1-hour Auto Timer, USB Charging Port) Elune Natural LED Smart Desk Lamp. Ultra energy efficient (save 80% energy with this LED desk lamp) & eco-friendly. Multiple modes: 4 modes,From cozy warm yellow light to bright non-flickering white light. The Auto Off Timer allows an hour time before it automatically shuts off allowing bed time reading. With USB interface for charging for other equipment, such as mobile phone, MP3, etc. Multiple adjustable positions for best comfort, Easy folding. Cost effective: With LED's expected life span of 45,000 hours, Limited 2 year warranty. LED panel arm can be adjusted up to 140;Lamp center post can spin 180 and can be adjusted up to 40. 17.25" high center post with 14" arm and 7" sq. base.