Marvo HG8902 headphones are designed with a closed, over-ear design that delivers powerful bass. The ear cushions are softly padded in synthetic leather and offer comfort during use. The headband can be automatically adjusted for a perfect fit. The headphones also feature built-in volume control and a solid, reinforcing structural design. Specifications: Wireless: No USB PC Compatibility Lighting Mode: RGB Detachable Microphone: No Speaker Size: 50 mm Speaker Sensitivity: 119 dB ± 3 dB Impedance: 32 ± 15% Frequency response range: 20 Hz ~ 20 kHz Microphone Size: 6*2.7 MM Multidirectional microphone Microphone Sensitivity: 38 ± 3db USB Channel: Stereo Cable length: 2.1 m Weight: 307 g