Function: 1. [Wireless & Portable] LED reading light with built-in 3.7V 1000mAh battery, no need to plug when in use, more suitable for use when sockets are limited and power outages, suitable for travel. 2. [EYE PROTECTION] A key switch on the top of the book light (white light). 5-energy-saving LED lights, bright, flicker-free and dark area, protect your eyes from fatigue. 3. [360 GOOSENECK] Foldable reading lamp, 360 flexible gooseneck design, adjust the lighting angle as needed. Can be folded into a small light, does not take up space, portable. 4. [USB Charging] The LED book light comes with a universal USB charging cable, which can be charged and illuminated via USB adapters, chargers, desktops and laptops, saving your time. 5. [CLIP BASE] The book light clip is best for reading, working, studying, crafting, displaying, camping or emergencies. Suitable for dorm, office, bedroom, living room, children's room, bathroom, etc. Specification: Item Type: LED Reading Light Material: ABS Base Part Size: About 8.5 x 4.5 x 4cm Height (adjustable): Approx. 25cm/9.8in Weight: approx. 122g/4.3oz Color: black Light source: white light Built-in battery: 3.7V 1000mAh polymer lithium battery (included) Number of lamp beads: 5LED Switch control: top button Charging method: USB Package List: 1 x LED reading light 1 x USB Cable 1. Recharge when not in use for a long time to protect battery life. 2.