Model: SR1 Driver: 9.2mm dual magnetic Titanium film dynamic Impedance: 16Ω±10%@1kHz Sensitivity: 103.5dB±3dB@1kHz Frequency response: 20-20kHz Channel unbalance: 100Hz-1kHz≤3dB Rated input power: 2mW Phase/channel check: Make sure the left and right channels are in phase. Left and right channels are not interchangeable. Connector: 2Pin 0.78mm Cable: 1.2m Plug: straight plug 3.5mm jack