waterproof technology that worth thousand yuan, even the water vapor can’t be filled. The ring latex is completely enclosed and waterproof, formed with o slit. Even under water 5 meters high pressure normal can be used.
The bionic design
bionic design of spindle-shaped fish, easy to be in water, swimming light and firm
9mm titanium diaphragm
titanium crystal diaphragm has light weight, strong rigidity, fast reaction speed, transient stability, bass drum, sound and crisp