USB Powered Internally Semi-Reflective Optical Film Lined Acrylic Pyramid Shaped LED Light with Inline Power Switch Lamp Contains 20 Bright White LEDs with Adjustable Colour Temperature (3 Warmths) and 10 Brightness Levels Adjusting the Warmth and Brightness Changes how the Pyramid Glows Changing the Colours in the Holographic Effect Perfect for Gadget or Sci-Fi Lovers as a Uniquely Styled Lamp that Makes an Eye Catching Night Light or Mood Lamp Measures Around 19.5 cm by 11.5 cm by 11.5 cm | Comes with In Built USB Cable | Requires 1A|5V USB Power Supply