The spring is fixed, which is more convenient for disassembly and assembly. A high-elasticity spring is used, and a holster is coated on the outside, which can play a fixed role, enhance the friction force, and will not slip off. At the same time, it can also prevent the spring and the hard hat from directly rubbing and increase the service life of the spring.
Card slot design, the connection is closer. It is suitable for all kinds of helmets. The card slot design can easily install the screen on the helmet, and the disassembly is also easy, making the combination more tight.
Aluminum edging process to prevent folding. The one-millimeter aluminum cladding process can prevent folding and support at the same time.