ItemNo.: SZSK-042S Description:2PackMP3Headphone Feature: Impedance:32ohms15% FrequencyResponse:20Hz-20KHz SpeakerDriver:16mm Plug:3.5mm Color:white PackingSize:12cmx4cmx18cm G.W.:70g InnerBoxSize:18.5cmx19cmx13cm Qty/Inner:5PCs MasterCartonSize:39cmx42cmx28cm Qty/Master:40PCs N.W.:2.8Kgs G.W.:4.21Kgs