Head: 45 degrees inclined 360 degrees rotatable binocular; Body holder can be inclined 0-90degrees; Eyepieces: super wide field SWF10X/23 and WF20X; Total magnification: 20X-40X-80X * Ocular tube has diopter adjustment +/-5dp; Interpupillary distance: 2-3/16inch - 2-15/16inch(55-75mm) * Working distance: 3-3/4inch (95mm) without 0.5x auxiliary lens and 6inch (152mm) with 0.5x auxiliary lens * Illumination: 64 LED ring light; On/off power switch; Variable intensity; Diameter of ring light: 50mm; Matching objective housing size in diameter: 1inch - 2.4inch (25 mm - 61 mm); Lifetime: 100,000 hours; Plastic shell; Power supply: Input: 100V - 240V * 5-year warranty against manufacturing defects