Latest design high-quality metal frame with LED reading glasses Description: LED Reading Glasses with Protective Case Case Size ... : 155MM X 45MM X35MM12 Magnify Strengths: +0.0 ,+1.00,+1.25, +1.50 ... , +1.75,+2.00, +2.25,+2.50 ,+2.75,+3.00,+3.25,+3.50Battery ... for end consumer, if used continuely, LED light lasts approximately 30 hours.