This microscope is designed for accurate, efficient observation with flexible lighting and secure specimen handling. Key benefits Precise focusing: Separate coarse and fine focusing knobs allow rapid positioning and then delicate adjustments to bring the specimen into sharp focus. Versatile illumination: Builtin LED reverse light with the option to switch to an external light source makes it simple to highlight both surface contours and fine internal details. Secure, removable stage clamps: Metal clamps hold slides firmly in place for consistent results and can be removed for cleaning or alternative sample types. Adjustable aperture control: Five aperture holes let you change the light opening to match the specimen and observation needs, enabling better control over brightness and contrast. Features and attributes Function: Coarse and fine focus mechanism for fast, accurate observation and precise fine tuning. Lighting: Builtin LED reverse illumination plus support for an external light source to switch between lighting modes. Stage material and design: Stage equipped with durable metal clamps that secure specimens and are easy to remove after use. Light control: Dimmer with five aperture holes to vary light size and intensity for different specimens and magnification settings. Performance: Designed to improve clarity and reproducibility of observations through controlled focus and lighting. Practical use scenarios School laboratory: Fast coarse focus helps students locate samples quickly while the fine focus and aperture options let instructors demonstrate detailed structure under consistent lighting. Hobby microscopy: Switch between builtin LED and an external light source to examine both transparent slides and textured surfaces, with metal clamps keeping specimens steady. Routine lab work: Secure mounting of specimens and precise focus control support repeatable observations during sample preparation or documentation. This product offers straightforward, reliable control over focus and illumination, a robust stage fastening solution, and adjustable optics to match a range of specimens and observation requirements.