As Seen On TV Magna Vision Make your phone screen looks bigger: the screen magnifier makes the phone screen 2-3 times bigger, which makes your eyes more comfortable 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 & 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