Features:- It uses high-definition optical amplification technology， not power-driven， energy- saving and environmental protection.- It's simple， light weight， small size and easy to carry. Suitable for use in a variety of occasions-indoor， camping， traveling， leisure， etc- It uses high-definition optical technology France Fresnel that it makes the screen zoome in three times and the picture is more clear and vivid， dynamic feel stronger!- Especially watch 3D movie in the phone， the stereo effect is stronger.- It can be used as magnifying glass because of its large area enlarged.- It's more suitable for the elderly to read， newspaper， read the news online.Product: Screen MagnifierCompatible with: For cellphoneUnique: With ShadowFunction: FoldablPackage Weight : 300(g) / 10.58(oz)Package Dimensions(Length*Width*High) : 80(mm)*80(mm)*50(mm) / 3.15(in)*3.15(in)*1.97(in)Retail Packaging: No， No PackingPackage Include:1 x Amplifier