Clear Com CC-400-X4 Double Ear Headset Headphone and Cardioid Dynamic Microphone The CC-400 (double-ear) headsets feature high performance headphones and cardioid dynamic microphone that provide high quality audio. Features: High quality dynamic cardioid microphone High ambient-noise attenuation headphones Microphone: 300Hz ? 20kHz frequency response Headphone: 40Hz ? 20kHz frequency response Cushioned with soft leatherette padding Flexible gooseneck microphone positioning 300-degrees boom mic rotation for ON/OFF mic-mute switch Rugged design Specifications: Headphone Type: Closed-back Driver: 40mm diameter, neodymium magnet, copper-clad aluminum wire voice coil Frequency Response: 40Hz v- 20kHz Microphone Element: Dynamic Polar Pattern: Hyper-cardioid Frequency Response: 300Hz ? 20kHz Sensitivity Microphone Open Circuit Sensitivity: -61dB 3.5dB (0dB=1V/1Pa, at 1kHz , typical) Headphone Sensitivity CC-300: 102dB 3dB (SPL) /1mW at 1kHz typical) CC-400: 98dB 3dB (SPL) /1mW at 1kHz typical) Impedance CC-300: 400? 30%; at 1kHz typical CC-400: 200? 30%; at 1kHz typical Microphone: 200? 30%; at 1kHz typical Connector Cable: 5ft (1.55m) long with 8-pin connector at headset end; 4-pin Female XLR Dimensions Packaging for CC-300 and CC-400: 4.8 x 13 x 10.43in (WxHxD) (122 x 330 x 265mm) Weight CC-300: 8.6oz (245g) without 8-pin cable assembly and M3*18mm SCREW CC-400: 11.1oz (315g) without 8-pin cable assembly and M3*18mm SCREW Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping --Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - Clearance items, Custom Builds, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids