Elegant looks, excellent sound quality and impressive quality. This is the product for demanding customers.Perfect solution for notebooks and PCs - microphone on the hook. Additionally there is adapter from 2 mini jack to 1 x mini jack - for smartphones and tablets. Main advantages:Extra Bass System. Comfortable headband. Modern design. High quality workmanship. Technical details:Speaker driver unit: 40mmFrequency response: 20-20KHz Sensitivity: 116±3dBImpedance: 32Ohm ±15%Maximum input power : 100mwConnectors: 2 x 3.5 mm (for smartphones and microphone)+ adapter to 1x mini jack