This magnifier is designed to use with mobile phone camera for identification of emerald jade jewelry, taking photos and observation of tiny things. 20 - 400X cellphone microscope enhances the clarity while shooting. Features: Lightweight and portable, light to 3g, thin to 5mm, let you play micro photography anytime, anywhere. 2 um optical resolution, flat-field achromatic micro-objective lens. Approximately 20-400X magnification, 5mm diameter field of view, ultra high resolution. Compatible with Android and iOS and other smart phones, not limited to models. Equipped with 12pcs mini traceless adhesive stickers, each sticker can be reused for about 100 times, very economical and practical. Perfect for paper fiber, droplets, camphor leaf, cloth, rice weevil, mite, stamps, antiques, precision parts, etc. Note: 1.Device Requirements: for Android 4.2 and above IOS version: for iOS phone 8.0 and above 2.App Download: IOS: search "TinyScope" in App Store Android: search "TinyScope" in Google Play Specifications: Type: Cellphone Microscope Color: White + Black Material: PC material Lens Material: Flat-field achromatic lens Magnification: 20-400X Lens Diameter: 5mm Item Size: Approx.42 * 18 * 5mm / 1.7 * 0.7 * 0.2in Item Weight: Approx.18g / 0.63oz Package Weight: Approx.47g / 1.68oz Package Size: Approx.15.4 * 8 * 2cm / 6.1 * 3.2 * 0.8in Package List: 1 * Microscope 1 * Storage Box 12 * Sticker 2 * Sample Slide (Randomly Sent) 1 * Lens Wiping Cloth 1 * Lanyard 1 * User Manual (English, Japanese)