Feature: 1. Adjustable Brightness: 3 levels of light brightness which you can adjust to suit your preference, with low light, medium light, highlight. 2. USB Rechargeable: Reading lamp can be powered by USB charger, notebook USB, mobile phone adapter, and etc. 3. 360 degrees Flexible Neck: Universal hose can be adjusted arbitrarily to meet the requirement of 360 degrees luminous angle. 4. Strong Clip: Clip is very strong and tight and will clip on the smallest of edges and stay put, and also clamp on to anything near you. 5. Wide Application: Book lamp is perfect for working, reading, study, playing computer, crossing stitch, etc. Specification: Item Type: LED Reading Light Material: ABSSize: Base length approx. 12.5cm/4.92in, width approx. 6.5cm/2.56in, extension height approx. 38cm/14.96in(approximate measurement)Weight: Appeox. 223g/7.87oz Built in Battery: 18650 lithium battery 1200mAh (included) Light Source: White light Charging Method: USB Gear: Low bright - medium bright - highlight 3 level Switch Mode: Touch control Life Span: 20000H . Package List: 1 x LED Reading Light1 x User Manual1 x Paster1 x USB Cable