Detailed Specification
| Color | Black / Camouflage |
| Type | Summer / Winter Helmet |
| AC Impedance For Microphone | 100Ω (1000Hz) |
| Sensitivity For Microphone | ≥ 0.5mV / Pa (1000Hz) |
| Frequency Range of Microphone | 150Hz ~ 5000Hz |
| AC Impedance For Receiver | 2*300Ω (1000Hz) |
| Sensitivity For Receiver | ≥ 98dB / mW(1000Hz) |
| Material of Winer Lining | Wool |
| Frequency Range of Receiver | 300Hz ~ 3400Hz |
| Material of Winter Outsides | Leather |
