Carved from a spinning block of metal, this cordless table lamp is pure in form and reassuringly firm in texture. It stands sharp eitting gentle light from beneath its top to fill the darkenss with a warm radiance that enhances the night.USB charging: Approx. 6 hoursRechargeable lithium-ion battery, 3.7 V / 5200 mAh4 dimming levels: low, mid, high, ex-highBattery run time (h): 150, 38, 12, 5Power consumption (W): 0.1 - 0.5 - 1.2 - 3.5PSE,CE, IP66, Class IIIAC adapter (Art. AMB-AC02) not included. Please use an AC adapter with output of 5V 2A or higher.