HEADSET SPECSFrequency response: 20-20.000 HzImpedance: 32Ω +/-5Wireless connector: 2.4GHzWired connector: 1x3.5mm jackBattery capacity: 1100mASensitivity: 112dB +/- 3Max power: 50mWSpeaker size: φ50mmMIC SPECSImpedance: 2.2KΩ Sensitivity: 42dB +/- 3