Tj Point TJ-8001. Interface type: 3.5 mm, Cable length: 1.35 m, Headset connectors supported: 3.5mm stereo. Ear coupling: supraaural, Headphone frequency: 10 - 20000 Hz, Headphone sensitivity: 103 dB. Microphone frequency: 100 - 10000 Hz. Compatibility: Telephone, Number of products included: 1 pcs, Connector contacts plating: Gold