A beautiful piece of art, the Derin cordless table lamp features a stone pole that is pushed through an iron mushroom shape shade. Inspired by the mysterious ancient underground city of Derinkuyu, hence the name 'Derin.' Specifications:Material: Iron + StoneSize: Height 27cm x Top Width 20cm x Bottom Width 8cm(Height 10.63in x Top Width 7.9in x Bottom Width 3.15in)Weight: 3.65kg (8.05lb)Rechargeable lithium-ion battery: 5 V / 5200 mAhVoltage: 100-240V (can be used globally/internationally)Safety Control Procedures: Anti overcharge and over discharge, over temperatureProtection: Anti surge current and static electricityBattery run time: 15-20 HoursWorking Lifetime(Hour): 30000Light Temperature: LED 3000KCharge Time: 4-6 hoursBottom Pad: The bottom has a sponge pad design to prevent scratches on any desktopDimmable: 3-stage dimming. Tap switch to change brightness.Lamp Luminous Flux(lm): 500Package Includes: Lamp (no assembly required) and USB type C chargerCertification: CE, CSA, C-Tick, FCC, RoHS, SASO Approved For Middle East Export