HSI is a single-sided headset with a vented circumaural earpiece to provide clear incoming audio while allowing situational awareness of your natural surroundings. HSI headset is available with a 6-pin audio / push-to-talk (PTT) assembly or in situations where a PTT is already on-hand, HSI is available with a standard NEXUS TJ101 connector for use with all standard U94PTT or other push-to-talk units. The headset is available with an electret microphone for use with military radios and a dynamic boom microphone for use with law enforcement radios.

The HSI is ideal for military or tactical operators who need reliable communications in a minimalist format. Includes adjustable headband for wear with or without a helmet, on either side of your head. Available only in Black.