Mingkeda Gooseneck LED Desk Table Clamp Lamps ( 6W, Eye-Care, 3-level Dimmer, Anti-Glare, Flicker-Free, White) TOUCH CONTROL: Touch or slideyourfingertoadjust3levelbrightness GOOSENECK DESIGN: The strong but flexible gooseneck arm will hold the lamp in your desired position. VISION FRIENDLY LED LAMP: No flickering, anti-glare, and no ghosting protects your vision and reduces eye fatigue. ENERGY SAVING: Compared to traditional incandescent lamps, the LED brings the same level pf brightness but consumes 80% less power. CLAMP BASE: The max opening of adjustable clamp is up to 2.36 inch, will clip onto almost any table, shelves that are vertical or horizontal.