-WEIGHT: 70g SIZE: 110 x 40 x 12mm
-MICROPHONE: Electret, impedance 2.2 kOhm @ 1 khz
-SPEAKER IMPEDANCE: 32 Ohm
-CABLE, COILED (flame-retardant): 4mm dia, 380mm
-CABLE, STRAIGHT (flashover-proof): 4mm dia, 750mm
-CONNECTOR: 4-pole quick-release connector
-OPERATION TEMPERATURE: -25 to 63°C (continuous)
-HUMIDITY: 95% RH, 63°C for 500 hours