Features: 1.ABS material, durable and strong, with LED light source, easy to operate and clear imaging. 2.The microscope needs 2 AA batteries to help children observe objects at the best angle, observe dust, sand, coins, petals, insects, plants, etc. 3.Enhance children's scientific analysis and logical reasoning skills, encourage them to explore the world, and expand biological knowledge through their eyes. 4.Widely used in children's education, botany and macroscopic specimens, elementary students or home school projects. 5.Complete tools, you can operate it yourself, suitable for science enthusiasts. specification:Item Type: Children Microscope Set Purpose: Gifts, etc. Material: ABS Size: Approx. 22 x 7.7 x 12.2cm / 8.7 x 3 x 4.8in How to Use: 1. Turn the focusing handwheel to find the appropriate focal length 2. Adjust the appropriate objective lens, place the glass slide, remove the protective cover of the eyepiece, turn on the light source, and observe Note: Unscrew the screw, fix the mobile phone holder to the eyepiece, fix the mobile phone to the holder, fix it in a suitable position, adjust the mobile phone and fix it (this operation is to use the mobile phone camera to observe the record) PackageList: 1 x Tweezers 1 x Mobile Phone Holder 2 x Collection Bottle 1 x Sample Box 1 x Microscope 1 x Sample Fiber 4 x Blank Slide NoteManual measurement, for reference only.