High quality earphones. Stereo with volume controller. Speaker diameter: 10mm. Speaker impedance: 16 ohm 15%. Keep things simple and opt for these reliable and high quality set of volume controlled earphones. Easily adjust the volume of the audio without having to reach for your device. Comfortable wear for prolong use. Volume-Controlled Earphones • High quality ear phones. • Come with volume control for ease of use. • Enjoy the high quality bass and treble sounds. • Speaker diameter: 10mm. • Speaker impedance: 16 ohm±15%. • Speaker sensitivity: 102dB±3dB. • Frequency response: 20-20,000Hz. • Maximum power input: 20mw. • Cord length: 1.2 m±10%. Plug: Φ3.5mm. • Stereo with volume controller.