LemonBest Flexible Eye Care LED Desk Lamp 5050 SMD Dimmable Reading Study Lamp, 2 Level Brightness and Color Control USB/AC 85V~265V Power (Silver) Aluminum Alloy and Pc Imported Clamp the LED Flexible Neck Clip-On Booklight onto your book or lap desk Round Frosted Surface Eye Care Lamp with 10 5050 SMD lamp beads Cable length: 1.6 meters; Hose Length: 38 cm ; The biggest holder width: 6 cm Can be powered by USB or AC Adaptor (included) 85~265V-50/60Hz Can adjust brightness(200 lm or 450 lm) and light color(White and warm white), totally four lighting modes