Features: Model: 2.5x17.5 Function type: Telescope Magnification: 2.5X Exit pupil distance: 13.5 (mm) Dimensions: 35x22 mm Distance of exit pupil:13.5mm Net Weight: 20 g Color: BlackDescriptions: As a result of three 2-group lens， so clear imaging， imaging bright， clear and bright It is very portable， just set in the fingers can observe distant objects All high-quality composite whole achromatic lens， high-quality AR-degree film， Full metal. Multiples of the real， high-definition optical quality. 2.5x17.5 subminiature telescope only size as 35x22 mmPackage: 1Pcs Thumb Miniature Telescope