3 New Unopened Headphones SteelSeries Siberia 650, with box etc If you have any questions - just send me messeges :) _Tech Specification_ Brand: SteelSeries Model: Siberia 650 Color: White Headphone Frequency Response: 16Hz-28KHz Headphone Sensitivity: 120dB Connector: USB, Single 3.5mm, 4-pole plug, Dual 3.5mm, 3-pole Ear Coupling: Circumaural Cord Length: 4.0 ft. Microphone Impedance: 2.2 Ohm Microphone Frequency Response: 100Hz-10KHz Driver diameter: 50 Microphone Sensitivity:-44dB Features: Superior Sound, Extreme Comfort, Customization, Dolby Technology, Customized Audio, Noise Isolation, Upgraded Microphone, Memory Foam Earcups, Refined Suspension System Steelseries Engine 3 Sound Card