Radius HP-NHR21 Earphones: High-Resolution Audio Compatible, Ne VOLT Series, Deep Bass Model HP-NHR21 (1 unit, Red)

Input: 5mW Type: In-ear, Stereo/Mono: Stereo, Structure: Closed-back, Noise Cancelling: Not supported Surround Sound: Not supported, Wireless: Not supported, Interface: Mini-plug Frequency Response (L): 5Hz, Frequency Response (H): 40000Hz