Features: Built-in adjustable timer, which can be set for up to 60 minutes, ensures the scientific and normative experimental process. This design effectively solves the problem of students' improper time management in the experimental process, and is suitable for science classes and extracurricular scientific activities in primary and secondary schools to improve the learning effect. Equipped with 4X, 10X and 40X magnifications to meet different observation requirements, so that students can observe tiny structures in detail. Its safety and environmental protective features ensures none toxic and harmless, provide peacing of mind for parents, and are suitable for frequent daily use and accompany children's growth exploration journey. The overall weight is only 800 grams, and it is equipped with a portable handbag, which is convenient for students to take with it for outdoors adventure or scientific exhibitions. This technology optimizes the imaging effect compared with the low-quality lens, and solves the problem of unclear information transmission caused by blurred images. Specifications: Component: ABS, electronic components, acrylic, LED Product size: 12x7.7x12.8cm Color: Yellow/Blue Package Includes: 1pcs Handheld Digital Microscope note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.