Shine on 3d glasses with imported puma lens from Korea which the clarity is 30% higher than common lens in the market;Head strap adjusts to comfortable fit most head types ,improved up leather material brings a soft fit around eyes area;Net weight of the glasses is only 280g which is the most comfortable weight for people to wear;Magnet-adsorbed easy removing front cover ,you can charge and use earphone;Workable with smartphone with the size rang of 4.0-5.5 Inches