Total power: 15W/21W LED power: 12W/18W Voltage: 100V-240V LED quantity: 24 LED/36 LED Luminous flux: 300lm/420lm Color temperature: 4200K/5600K Lamp color: Silver/grey/black CRI: Ra 75 minimum Features: 1. The component adopt high quality aluminum-alloy which show that our table lamp is durable and high grade and has a modern stylish appearance. 2. The light source adopts advanced LED with high brightness, low light regression, long life span, no radiation and environmental protection. 3. It adopts low voltage, constant power supply and has patent for the light conductive panel, so that the lamp has no dazzle and creates a comfortable and stable light. Appliation: They are designed for office lighting.