Input Voltage: DC5V Current: 350mA Power: 1W Hose Length: 300mm Power Cable Length: 1.8 meters (including inner tube) Rotation Angle: Arbitrary rotation Luminous Flux: 110lm Illuminance: 140lux (25 to 30 cm) Material: Metal + Plastic (clamp part is plastic) Color: Black, Silver Package Contents: 1 * USB Night Light 3 Lighting Modes: This book light offers 3 lighting modes: 4300K (cool + warm white), 3000K (warm white), and 8000K (cool white). 360° Gooseneck & Clamp Base: The flexible and adjustable gooseneck can be rotated 360 degrees, allowing you to position the light exactly where you need it. The sturdy metal clamp with non-slip pads opens up to 2.3 inches, perfect for music stands, pianos, office desks, computer tables, and headboards. USB Powered: The book light can be powered by any USB charger, laptop USB, mobile phone adapter, car USB, etc. (Adapter not included). Eye Protection LED Reading Light: Flicker-free and glare-free light helps you avoid eye fatigue caused by flickering lights. Lightweight & Portable Clip-On Light: This clip night light is lightweight with a padded clamp, making it easy to attach anywhere. Perfect for reading in bed or traveling; foldable and portable for easy carrying.