The desk lamp is safe, energy efficient, environmentally friendly and practical. It is very suitable for children and adults. This would last about 4 hours staying at the highest brightness and 15 hours staying at the lowest brightness. Suitable for use in offices, bedrooms, schools and reading. Built-in large capacity battery, the desk lamp can charge the cellphone. It is made of high quality material, not easy to break and has a long service life. Color: Dark Green Specifications: With 360 degree adjustable, the flexible gooseneck tube can adjust its height and angle, easily folds into compact position. This would last about 4 hours staying at the highest brightness and 15 hours staying at the lowest brightness. Using high quality lamp beads without shadows, it is easy on the eyes when reading, working or writing. The battery can be charged by USB to laptop / computer or adapter. Built-in large capacity battery, the desk lamp can charge the cellphone. Item name: desk lamp Material: ABS, metal tube Power: 3W Color temperature: 11000-13000K Battery: Built-in 1200mAh battery (included) Features: rechargeable, charming, adjustable Size: 42cm x 12cm x 12cm / 16.54 " x 4.72 " x 4.72 " (approx) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. The package includes: 1 x desk lamp 1 x USB charging cable