This is a military surplus item.  It has a few scratches/scuffs from use.  It has been tested to confirm power on and noise cancellation / volume control are working.  Please review all photos and check the cable connections to confirm you have the appropriate device to pair with the headset.  

Key Features of TEA Hi-Threat (HTH) Tier 1

• Core Design: Based on the rugged Sordin Supreme active hearing protection platform.
• TEA Enhancements: TEA upgrades standard Sordin electronics by applying a specialized potting compound onto the circuit board to significantly improve water resistance and durability, matching military standards.
• Comms & Microphone: Features a ballistic and submersible noise-canceling boom microphone.
• Hearing Protection & Amplification: Provides active combat noise suppression while preserving 360-degree ambient sound awareness.
• Helmet Compatibility: Designed with a low-profile removable headband (with breathable Velcro nylon cover) or rail-mounting adapters that fit under or onto helmets like the Ops-Core FAST and Team Wendy EXFIL.