[Features:]Material: Silicone, Acrylic, ABS Suit for all 2.5" - 6.0" screen cellphonesMobile phone screen can be magnified 3 times, picture clear and vivid, dynamic feeling stronger!Suitable for all kinds of mobile phones and all various occasions -- indoor, camping, journey, leisure etc.Use HD amplification optical technology,no power-driven, no-cost, energy-saving and environmental protection.Enlarge the phone display, to watch the bigger screen of 2x ~ 4x ;Mobile phone adapter use skid material, prevent from slipping, falling[How to use it: ]1. Please avoid using in direct sunlight or strong light, avoid light cause is not clear, it will display better in the dark light environment. 2. Do not use hard wipe scratch the lens, when not in use, please use a soft cloth to protect the lens. 3. Adjust the distance from mobile phone frame to the lens and angle, adjust focal length, lens angle, in order to achieve the best view and optimal amplification effect and the best definition. 4. The best watch angle is vertical to the lens, a distance of 0.5 meters it the best watch distance. Because the lens is larger, the mirror slightly reflective phenomenon, please adjust the brightness of the light and the angle of the light.