Yuyao Ritek Electronics Co.,Ltd is one of the leading China 7 inch magnifier lamp manufacturers and suppliers,Website:http://www.ritekmagnifier.com, welcome to contact us.RT206.01 Lens size: 7" (177mm) Diopter options: 3 or 6 Light source: T5 22 Watt circular lamp Arm with internal springs Arm length: 36" Clour options: White, Black Table clamp included Lens cover included