Make your phone screen looks bigger :The screen magnifier makes the phone screen 2-3 times bigger,which makes your eyes more comfortable ,especially you can enjoy movies in HD visual . No Battery Needed :Adopt HD zoom optical technology,no battery needed. Angle Adjustment:To achieve the best view and optimal amplification effect please adjust the distance from mobile phone frame to the lens and angle,adjust focal length,lens angle. Hands-free:This magnifier built with phone holder,you can watch a film,see any video or read from your phone hands-free.It’s super convenience and practical.