Adjustable color temperature and LED light source, cold light, natural light, warm light.The lamp is a touch switch, short press to adjust the color temperature (press once for white light, press twice for warm light, press three times for white and warm mixed light, press again to turn off the lamp). Long press to adjust brightness steplessly (long press to adjust brightness without letting go).Highlight LED, LED desk lamp for reading and writingLight-emitting method: direct lightShell material: ABS+hardwareLamp life: >35000 hoursThe maximum illuminance 50CM (LUX):> 800lux (the brightest time)Luminous flux: 200LM of which 250LM for warm colors and 300LM for cool colorsWorking temperature: less than 50 degreesColor temperature: cold light: 5500-6000K, warm light: 2800-3300K, natural light: 4000-5000KColor rendering index: >80 6. Power factor: >0.8 7. Rated current: 1.5ALight source power: below 9W 9. Input voltage: DC5V2Acolor: WhiteProduct weight: 0.62kg-0.79KG