Product Specifications Impedance: 32 ± 15% Ω Sensitivity: 38 ± 3 dB Speaker Size: 50 mm Rated Power: ≥ 20 mW Frequency Response Range: 20 – 20 kHz Cable Specifications: 4.0 mm exposed, 1.8 m braided cable Plug Specifications: USB × 1, 3.5 mm AUX × 1