1. Double-side earphones (A type) for head-wear; single-side earphone (B type) for installed in the helmet or mask for free hand operation.
2. Perfect for military, police, special forces, fire-fighting or rescue missions.
1. Model: PP2200-005(A), PP2200-005(B). 2. Microphone: reciprocal vibration of head-skeleton, noise elimination at 30dB. 3. Earphone: reciprocal vibration of head-skeleton, 30Ω, amplifier. 4. Connecting cable: anti-inflammation elastic cable. 5. Connector: 6-pin fast plug-in/pull-out type. 6. Working temperature: -025°C ~ 63°C (continuous). 7. Working voltage: 3.0-10.0 VDC. 8. Humidity: 95%RH, + 63°C (500hours). 9. Main body weight: approx 155 g, approx 60 g. 10. Size: approx 16 x 13 x 4 cm, approx 24 x 4 x 2.5 cm.