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 Its and environmental protective features ensures none toxic and, 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 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 Equipped with 4X, 10X and 40X magnifications to meet different observation requirements, so that students can observe tiny structures in detail, Manufacturer: Oxxggkao