fh-jf1 active noise reduction protection earmuffs

military quality: 1, highly effective noise protection, with active noise reduction function, active and passive, to achieve the ultimate noise reduction effect, protect the hearing of personnel. 2. built-in military lithium battery is used for power supply, long standby time and replaceable battery. 3. the shell is made of carbon fiber, which is comfortable to wear. 4. applicable to airport ground service, naval ships, engine room, artillery positions and other environments