TAC-SKY Sordin Tactical Headset Silicone Earmuffs Fast Helmet ARC Track Microphone Sponge Cover Y Cable Set and the bracket installation is

and the bracket installation is also aligned with the notch to snap on

Clear sound

which is suitable for most FAST series helmets

A is PTT only，B is PTT plus U174 adapter cable

Reinforced fixed arm

TAC-SKY Sordin Tactical Headset Silicone Earmuffs Fast Helmet ARC Track Microphone Sponge Cover Y Cable Set and the bracket installation isEarphone material: ABS plasticEar cup material: siliconeMIC type: detachable microphonePlug type: military standard 7. 0mm plugNoise cancellation: active electronic noise cancellationPickup adjustment: increase or decrease + & Sound amplification: up to 4 timesBatteries: 2 AAA batteries (not included) 1. helmet type different from the classic airsoft headset, helmet type headset can be mounted directly on the helmet. If you want to modify your