Large capacity battery & 3 colors mode & stepless brightness adjusted: 3000mAH rechargeable battery providing up to 5-6 hours on maximum brightness and 100 hours on the lowest setting, built-in battery provides plenty of hours of use. This light has 3 color modes: yellow(3000K/3500K), warm white(4000K) and cool white(5000K/6500K), Stepless brightness (from 10% to 100%) = unlimited lighting options for any modes as working, reading, sleeping Muti-Clip or Stand & Modern design: Up to 2 inch wide clamp which is great for table, desk, dormitory and bed headboard and computer or leave stand alone with its own anti-skid base. Perfect fusion of elegance and durability in a minimalistic touch sensitive design, naturally fits with any type of decor, including office or bedroom. Gentle on the eyes: COLORLIFE eye-caring kids reading light made of high quality 24 LED chips offer non-ghosting and non-flickering light, the book light won't make eyes fatigued even staying in the lig