This magnifying glass uses optical eyeprotection glass and definition optical glass to protect your eyes and display images clearly. It provides a sharp, bright view with reduced distortion for comfortable use. Key specifications Magnification: 20x Lens diameter: 6.5 cm Total length: 20 cm Width: 7 cm Net weight: 162 g Power: None required (no battery, no electricity, no switch) Benefits and features Eye friendly design: optical glass materials are chosen to protect eyes and deliver clearer images with minimal distortion. clarity: definition optical glass ensures sharp, detailed views of small objects and fine print. Simple operation: a passive magnifier that works without any power source or electronic components. Portable and balanced: compact 20 cm length and 162 g weight for easy handling and stability during use. Use scenarios Reading tiny text: inspect fine print on manuals, medicine labels, cards, or product specifications without straining your eyes. Inspecting small components: examine coins, stamps, jewelry, electronics, or watch parts for details, authenticity, or quality. Hobby and craft work: perform precise tasks in model building, beadwork, soldering prep, or other detailed crafts that require magnification. Notes This device is a standalone magnifier. No batteries, electricity, or switches are required to operate. Lens diameter and overall dimensions are designed to provide a comfortable viewing area while maintaining portability.