NoiseHush NX45i delivers an incredible musical experience that you never thought possible. These beauties offer rich audio performance and are acoustically tuned by NoiseHush engineers to deliver deep bass with clear treble and amazing high end. With the NX45i, controlling your music is a breeze. Control the volume, audio tracks and your calls with its in-line remote control and built-in microphone. Special Features: Hands-free In-Line Microphone. Remote for Full Music Control. Noise Isolation with Enhanced Bass. Carrying Pouch Included. Specifications: Driver Unit: 10mm. Sensitivity: 98dB. Impedance: 16Ohms. Cable Length: 1.2m. Jack: 3.5mm. Frequency Range: 20-20,000Hz.