Philips SHL3000BL. Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 106 dB, Impedance: 24 Ohm. Weight: 140.5 g. Packaging type: Carton. Gross weight outer carton: 1.7154 kg, Net weight outer carton: 0.843 kg, Quantity outer carton: 6 pcs. Maximum input power: 30 mW