Product Name: ALPHA3 Net Weight: Approx 30g (Including Wire ) Frequency Response: 5Hz - 40kHz Impedance: 32 Sensitivity: 105dB1dB at 1kHz THD: <0.5% at 1kHz Dynamic Driver Unit: Liquid Crystal Polymer Composite Diaphragm with Flexible Suspension Earshell Material: Stainless Steel & Aluminum Alloy Cable: High-Purity Single Crystal Copper Silver-plated Wire Length: 1.2m0.1m