Elecom Earphone Colour. Ear coupling: intraaural, Headphone frequency: 20 - 20000 Hz, Headphone sensitivity: 90 dB. Connectivity technology: Wired, Cable length: 1.2 m. Dimensions (WxDxH): 11 x 24 x 14 mm, Weight: 3 g. Package dimensions (WxDxH): 33 x 34 x 169 mm, Package weight: 50 g