Why YOUKOYI A16 Clamp Arm Lamp ? . 3 Level Brightness changeable level ignite -LRB- 17LM/0 .17 W -RRB-, set ignite -LRB- 170LM/1 .7 W -RRB-, highschool ignite -LRB- 340LM/3 .4 W -RRB-. your other lighting needs.The LED bead life of up to 50000 hours.Swing Arm Lamp, Choose eightfold Lighting Angle The lamp adopts arm lever principle design, all-metal spring widgets support lamp holder, the lamp furnish uses impressible knob, changeable band joints without a screwdriver.Highly Extendable and collapsible 13.7 +13.7 '' extendible longsighted arm to folded to 15.7 '', commodious to use and save you a lot of space.Eye-Care Technology Use diffusion panel, emitting palatal ignite without ghost, glare or flicker, protect your eyes constantly.With USB Port and Touch Control More commodious to use and unchaste to operate.Worry-free : 12-month warranty, social and easy-to-reach support.Specifications : Material : Metal & PlasticDimmable : Brightness -LRB- 3 levels -RRB- Color Temperature : 5700KWattage : 3.4 W -LRB- max -RRB- CRI : RA > 80Luminous Flux : 340 Lumens -LRB- Max -RRB- Lifespan : 50,000 + rated hoursSwitch Model : Touch ControlAdapter : 5V DC 1APackage Included : 1 x LED desk lamp1 x Metal Clamp1 x AC 5V/1A Adapter -LRB- cable length 78.7 '' / 2 m -RRB- 1 x User drill .