Frequency range: 300 Hz – 10 kHz (in baffle)(Specified mask / measurement adapter: Attached below)DCR: 28.8 ohm +/- 10% (Nominal AC impedance 32 ohm)Resonance Frequency: 520 +150/ -78Hz (Free air / 1mW input level) Tentative specTHD + Noise: Specified mask attached belowSensitivity (With free air Jig): 89dBSPL +/- 4dBSPL (@ 600Hz)85dBSPL +/- 3dBSPL (@ 2kHz)85dBSPL +/- 3dBSPL (@ 4kHz)Continuous Power Rating: 40mW (with Nokia specified Jig & filter)Max Power Rating: 75mW (with Nokia specified Jig & filter)Operating Temperature Range: - 30°C to +70°CStorage Temperature Range: - 40°C to +85°C