1、Simple press power button to turn on the light, 3 color temperatures to choose: warm light, natural light and white light. 2、Adjust the brightness stepless from brightest to dimmest, or dimmest to brightest by 2 buttons on the switch. Perfect for reading and working. 3、With 38.5cm / 12in flexible arm which is made by metal tube. Easy twisting and setting the perfect lighting direction and viewing for your need. 4、USB powered, with USB port for use with any computer or power bank, 5m/9ft USB cable, easy to carry. 5、Strong clip, clip it on any board thickness within 6cm/4in, it won't be wobbling when you need direct the light. The foam pad will protect your furniture without scratch. 6、Eyes caring, soft and non‑flickering design, the lighting is friendly to your eyes, helping you avoid eye fatigue caused by flickering light and harsh dazzling. 1 x Clip Light1 x Instruction Manual Item Type: Clip LightMaterial: ABSColor: As shown in the pictureGooseneck Length: Approx. 38.5cm / 15.2in Light Head Size: Approx. 1.7x 27.5cm/ 0.7x 10.8in(W x L)Cable Length: Approx. 1.5m/ 4.9ftMaximum Clamping Width: Approx.6cm/ 2.4inWeight: Approx.446g/ 15.7ozMode: Adjustable 3 light colors, 10 level dimming