This table lamp is USB powered, eye-protective and fully-adjustable. With the clamp design base, you can put it right where you need. Its 2 light color (white, warm white) and 3 illumination modes(white/ warm white/ white & warm white) will keep eyes strain at bay. It can be used in computer desk, office table, workbench etc. Features:Powered by USB charger, USB power bank or laptop, so it is convenient when you want to use it.Its 2 light color (white, warm white) and 3 illumination modes(white/ warm white/ white & warm white) meet your different requirement in various places.4.5cm clip range make it can be used and strong bendy tub enable you to swivel the lamp flexibly and adjust the light position as you need.SMD2835 LED beads, flicker-free and anti-glare light without strobes and radiation, it can keep your eyes away from exhaustion.Be used perfectly with music stands, bookshelves, office tables, computer desks, headboards, etc.Built-in 1000mAh high capacity rechargeable, energy-saving, cost-saving, user-friendly.Mini in size and light in weight design which is excellent for college and university students who need suitable lights for reading and studying or wants to bring it with you.One press button for 3 different lighting modes operation, convenient and flexible.Charging indicator lamp design, it lights red light when it is charging and turns to yellow light when it is fully-charged. Specifications:Input voltage: DC 4.2vTotal wattage: 0.5wLight source: SMD2835 LEDLight color: 3 color illumination modes (white/ warm white/ white & warm white)Material: ABSLED quantity: 5 pcs (2 pcs *warm white & 3pcs * white)Battery: 1 * 3.7v 1000mAh rechargeable lithium batteryLumen flux: 110lmItem color: blackCable length: 1010mm / 39.8inClamp gap width: 45mm/ 1.8inTube length: 180mm/7.1inLamp length: 60mm/2.4inItem weight: 70g/2.5ozPackage size: 100*76*65mm/ 3.9 * 3 * 2.6 (L *W *H)Package weight: 106g/3.7oz Note:This product is non-waterproof, please use it carefully. Package list:1 * Table lamp1 * USB cable1 * Instruction