1 way in-ear headphones. Dynamic 8 mm drivers with bass boost. Ergonomically shaped casing with GEWA logo. Sensitivity at 1mW: 119 dB SPL. Impedance at 1 kHz: 16 Ohm. Frequency response: 20 - 25.000 Hz. Detachable cable with 1.2 m length. Colour: black. Incl. silicone ear pads in 3 sizes and bag