3 colour modes & 6 brightness levels: Yellow (3000K), warm white (4000K) and cool white (6000K); each arm has independent three-level brightness control; reading lights for books in bed, knitting or camping Partner-friendly 90° beam: Special narrow beam angle directs light only where you need it; bright enough for detailed tasks yet dim enough to not disturb your sleeping partner; ideal led neck reading light for shared bedrooms Eye-caring & ergonomic: This neck reading light features flicker-free LED beads with blue light filter to reduce eye strain; supple adjustable arms and ergonomic neck-around design provide hands-free comfort for extended reading sessions USB-C rechargeable & long-lasting: Built-in 1000mAh battery delivers up to 80 hours of reading light runtime; premium rechargeable cell maintains steady brightness from full charge to empty with included Type-C cable Certified quality & warranty: FCC, CE, RoHS and PSE approved reading lamp with original patent design; package includes book light, USB-C cable, user manual and bookmark; 18-month worry-free guarantee