With the phone holder, sucker design, which can adjust the angle, it is convenient and practical, so you can put your phone on the holder, take photos or record video, then you can share it with your family or friends. It is easy to install, so you can see the observed more clear, give you a better using experience. The magnification can be adjusted from 40X-2400X, you should choose the suitable objective lens and eyepiece then adjust the multiples to find the clearest looking multiples. The fine gift: this tool set is the fine choice to send to your friends, family, children and so on. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Magnification: 40X-2400X Focusing range: 0-30mm Eyepiece: WF16X, WF30X extender Optical system: refractor Observation lens tube: monocular straight tube Colour:Photo Color Material:alloy Package Contents: 1 x Monocular Optical Microscope kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.