Clear Com CC-110-X4 Single Ear Headphone with Cardioid Dynamic Microphone The CC-110 (single-ear) premium lightweight headsets feature high performance headphones and cardioid dynamic microphones that provide high quality audio Features: High quality dynamic cardioid microphone 20Hz -20KHz frequency response Choice of earpads: leatherette or foam Flexible gooseneck microphone positioning Boom rotation ON/OFF switch for quick microphone muting Interchangeable cabling for easy connector change and repair Fully serviceable headset Rugged design Specifications Headphone Type: Closed-back Driver: 36mm diameter, neodymium magnet, copper-clad aluminum wire voice coil Frequency Response: 20Hz v- 20kHz Impedance: CC-110: 400? 30%; at 1kHz typical CC-220: 200? 30%; at 1kHz typical Microphone: Element: Dynamic Driver: 15mm, neodymium magnet Polar Pattern: Cardioid Frequency Response: 250Hz ? 20kHz Impedance: CC-110: 200? 30%; at 1kHz typical CC-220: 200? 30%; at 1kHz typical Power Maximum: 500mW Sensitivity Microphone Open Circuit Sensitivity: -64dB 3.5dB; (0dB=1V/1Pa, at 1kHz , typical) Headphone Sensitivity CC-110: 99dB 3dB (SPL) / 1mW, at 1kHz typical CC-220: 96dB 3dB (SPL) / 1mW,at 1kHz typical Connector Cable: 5ft (1.55m) long with 8-pin connector at headset end; 4-pin Female XLR Dimensions Packaging for CC-110 and CC-220: 6.7 x 8 x 3.5in (WxHxD) (170 x 205 x 90mm) Weight CC-110: 5.1oz (145g) without 8-pin cable assembly and M3*18mm SCREW CC-220: 6.8oz (195g) 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