Type: DJ Headphone Speaker: 57mm; Sensitivity: 110dB S. P. L at 1KHz; Frequency Response: 20Hz-20, 000Hz; Impedance: 32ohm; Rated Power: 3mW; Power Capability: 200mW; Cable Length: 4M with 0.3m tolerance; Plug Type: Stereo 3.5mm / 6.3mm add 3.5mm Notes: Flat, Round, HiFi Sound, Clear high frequency, exact medium frequency: A. Big caliber speaker 53mm with high impedance assure spatial sound field and high endurance; B. It can let you immerse in making music for its excellent stereo and sound insulation; C. You can enjoy music for a long time because of soft and confortable head pad; D. You can monitor with one ear by rotating your ear cup; E. Suitable for monitor with professional mix. 1) It can keep its sound quality independently in the club or Disco hall because of its good sound insulation. It services professional user with round and clear sound; 2) A 4-meter cable provides more freedom to move; 3) The headphone utilizes high grade innoxious Oxygeon-free cabling for speedy transfer with minimal loss. Coiled cable is easy for storage; 4) 3.5mm gold-plating plug has better oxidation resistance for longer performance life; 5) Noise-proof mic manufactured in dust-free workshop, high sensitive reception and high-pitched sound input&output enables virtual make real; 6) Adopt 53mm Neodymium magnet driver unit, which can have a perfect performance from undertone to alt; 7) All raw materials including working process comply with EU RoHS directives. And we can provide relative test report issued by authority, which ensure a safe and secure use.