Brand E-3lue Model HS707 Color Black Material TPE wire Interface Type 3.5mm length 2.15 M Impedance 16 ohm Sensitivity 114 dB Headphone Frequency Response 20~20000 Hz Working Voltage 5 V Features High quality and excellent sound clear headset allows you to listen to protests in a noisy environment seize every second initiative on the battlefield in a timely manner. Other Type: Headband; Drive unit: 40mm; Rated power: 15mW; Max output power: 150mW; Directivity: Omni-directional; Sensitivity: 114dB (1KHz); Distortion: 0.05%. Packing List 1 x Headphones (215cm)