Massdrop x Koss Porta Pro X On-Ear Headphones Description: Condition: New Opened BoxFeatures:Massdrop x KossConstruction: Plastic in exclusive midnight blueFrequency response: 15 Hz–25 kHzImpedance: 60 ohmsSensitivity: 101 dB/mWCable: 4 ft (1.2 m) with noise-cancelling inline microphoneConnector: ⅛ in (3.5 mm) TRSWeight: 2 oz (57 g)IncludedMassdrop x Koss Porta Pro X On-Ear HeadphonesCarrying pouch Shipping: We Accept PayPal, Visa, Master Card,Free shipping for all orders.Orders will be ship and handle within 1 business day.Estimate delivery: O