± 2. Face mask: communication function, mounted with an external loudspeaker and LED light

radiation;

flame-retardant and freeze-resistant nylon, with flame-retardant and anti-static function;

breathing;

7. Bottle belt: fast cam locking buckle, to prevent turning over;

9. Pressure head-up display device: three indicator lights mounted, green light, yellow light, and

10. Fast charging device: can quickly inflate the cylinder without removing, easy to use and

12. Fast connector: self-locking function and anti-off function;

15. Weight: 11.2kg