PRODUCTS DETAILS: Length: 160mm Width: 33mm Weight: 73g ( without batteries) The lifetime of Bulb: 20 hours continuously Specification: ·XHL Xenon Halogen Technology used; ·Durable and easy to clean; ·2*AA batteries used; ·The clip with integrated on/off switch; ·5 different apertures; ·19 kinds of adjustable corrective lenses, Range of lenses: -20 D to +20D |