The item simple, elegant, light weight, small size and easy to carry, suitable for use in various occasions -- indoor, camping, journey, leisure etc. Use HD amplification optical technology,no power-driven, no-cost, energy-saving and environmental protection. Simple, compact, and suitable for all kinds of mobile phone. Use as a traditional magnifier, magnify its large area, more suitable for the elderly read books, read newspapers, read the news online. Reduce the eyes fatigue when you watch videos on the phone. Small volume, convenient carrying on business travel.