Features: -With USB charging function, charge your phone, tablet, kindle and other USB devices while reading or working. -2 independent switches, allowing you to control the wall backlight and reading light separately, and turn on/off the switch as you need. -Adjustable universal lamp head, 330° left and right rotation, 90° up and down folding. -Acrylic material, good anti-aging performance, strong light transmission, soft and uniform light. Specification: Colour: black Material: Acrylic plastic Size: 19*11cm Rotation angle: 90-330° Input voltage: 85-220V Backlight power: 3W Spotlight power: 9W USB output: 5V/2A .