Model Number: HX-501 Key Specifications/Special Features: Neck ring allow for ideal fitTactical heavy duty throat microphone cutting down and keep noise from outside environmentDual throat microphone provide highest quality transmit audio possibleTransparent acoustic tube earphone provides privacy and discreet communication for any surveillance purposesEasy changeable acoustic tube perfect solution for high noise and tactical environmentsVOX PTT and control volumeSpeaker:

Speaker size: 15mm

Sound pressure level: 103dB ±3dB

Impedance: 32 ohm ±15%

Microphone:

• Frequency responses: 20-16000Hz
• Sensitivity: -36dB ±2dB
• Impedance: 2.2KΩ