Better sound comes in a stylish package The Edifier H750 is designed to look as great as they sound. These headphones are the perfect balance of sound quality, style and portability. The H750 headphone can be conveniently folded half of its size for easy travel using the lock mechanism. Edifier's headphone lineup is incredibly durable and the H750 is no different. In addition, these headphones feature a flat TPE cable that is pull resistant and tangle free. Technical Specifications Model: H750 Frequency Response: 20Hz-20KHz Impedance: 32 Ohm Sound Pressure Level (SPL): 91dB Speaker Unit: 30mm Connector: 3.5mm stereo gold-plated plug Cable Length: 4 feet / 1.2m Weight: 5 oz / 140g net Buy with confidence from world's second largest manufacturer. Edifier is the world's second largest consumer audio manufacturer. Despite not well-known in the US, Edifier has great market shares in Asia, Europe and South America. Edifier is the parental company of STAX, one of the most expensive headphone brands in the world. Edifier has incorporated similar technology and design concept into its consumer earphones and headphones, and strives to make the best sound affordable to everyone.