1. Clip on: Brighten up with the click of a switch on the cord and perfect for Table, Desk, Bed headboard and Computers.The maximum wide of this bedside lamp for clip:2.36 inch.2. Free Angle Adjustable of arm and lamp holder, place your book light for best viewing.3. 2 switches on the cord. One has three options: Warm light,off and White light. The other has two options to adjust the brightness: dim and bright.4. A 2-prong USB AC adapter and 5 feet/1.5m cord are provided to support the clip on light. Can be used with normal 110V household current.5. Eye-Protection Design: The sturdy reading lamp provides a comfortable lighting environment for the eyes, stable and soft lighting avoided shining light stimulation and flicker interference.Style: ModernSpecial Feature: Space-Saving, Dimmable, Wired, Firm Clip, Goose Neck, Adjustable, Eye-Caringcolour: blackMaterial: metalSize: 11x40x5.8cmPackage Contents:1 x Clip on LightOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.