Product Description: 1. The neck reading light has three kinds of lights, adjust the brightness from low, medium to high, and switch to your favorite brightness level at any time 2. The reading light has a -in rechargeable 1000mAh battery that can be used for up to 80 hours. Good for extended reading even during power outages 3. The book lamp is worn around the neck, freeing both hands. Great for reading in bed, knitting, camping or repairing, etc. 4. The book lamp can be flexibly changed into different shapes, does not take up too much space when not in use, and is easy to carry in a bag Product size: 10 x 7.4 x 1.1 inches/4.2*7.2*30cm Power supply: -in rechargeable battery (1000mAh) Battery life: 6-80 hours Light Mode: Low, Medium, High Color temperature: cool white, warm white, yellow Packing list: 1*Neck reading light 1*Instruction 1*Charging cable