HA-FX1X XTREME XPLOSIVES In-Ear Canal Deep Bass Headphones Earphones Earbuds Wearing type: In-EAR Function:MP3 player Connectivity:Wired Application: Mobile phone Sound channel: Two-Channel (stereo) Frequency response: 20~25KHz Impedance:16ohms Sensitivity:104dB/1mW Package weight: 0.118 Kg Package size (L x W x H): 20.500 X 10.500 X 4000cm / 8.071 X 4.134 X 1.575 Inches