Comfortable earphones with running pouch. Ideal for an active lifestyle. Speaker: 40mm - Sensitivity: 105 +/- 3 dB/mW (S.P.L at 1KHz) - Impedance: 32O +/- 15% - Frequency Response: 20Hz-20,000Hz - Rated Power: 15mW - Cable length: 1.2 +/- 0.2 M - Plug Type: 3.5mm Stereo What's in the box 1 x Loop Earphones