HEADPHON SPRTCLIP ON EAR by KOSS MfrPartNo 184838 Soft, Foam Ear Cushions For Open, Hear-through Sound. Pivoting Ear Plates Provide A Better Fit Than Most Clips. Freq Resp: 15 Hz - 25 Khz. Imp: 60. Sensitivity: 101 Db and mw. 4-ft Straight Dual-entry Cord. 3.5mm L-shaped Plug. Weight: 0.28 lbs. 3.5mm L-shaped Plug. Weight: 0.28 lbs.