The lens meets the eu ECE2205 standard,keeping the perspective rate，preventing eyepiece fogging and preventing collisions, 3d human nature curve design, more spacious field of vision;
High efficiency activated carbon, large absorption capacity, low resistance;
The unique design of diversion groove in the filter box, the activated carbon agent is not wasted, and the use time is long;
Five-point headband, fast plate buckle, easy and convenient, head uniform stress, no sense of pressure;
Unique sound transmission device, both working and communicating correctly.