2 speakers 40 mm in diameter. 32 ohm impedance. 108dB +/- 5dB sensitivity. Frequency range 20 - 20,000 Hz. 3.5 mm jack. 1.2 cable length with built-in microphone. Material: Shiny Black ABS. OVER-THE-EAR WIRED HEADPHONESupra auricular wired Headphones.2x speakers of 40mm diameter.Impedance of 32ohm.Sensitivityof 108dB +/- 5dB.Frequency range between 20 and20,000hz.3.5mm jack.1.2m cable length with integrated microphone.Material: Black Gloss ABS. Performance Certification CE, FCC Country of origin China Detachable cable Yes Cable colour Black Cable length 1.2 m Product colour Black Headset type Binaural Recommended usage Music Wearing style Head-band Product type Headphones Ports & interfaces Bluetooth No USB connectivity No 3.5 mm connector Yes Connectivity technology Wired Headphones Driver unit 4 cm Headphone sensitivity 108 dB Impedance 32Headphone frequency 20 - 20000 Hz Ear coupling Circumaural Microphone Microphone type Not available System requirements Mobile operating systems