... of optical design, the wavelength of light close to natural light, warm yellowish light environmental design, for a long time ... more energy use longer, tailored low-power ultra-brightness led lights, low power consumption, only use 3 batteries ... , halos and other phenomena.2.A4 paper size reading at night, protects the eyes, and not affects othersConvenient to ... , CBM: 0.13, G.W.:23kg Plate reading lamp