Product Name: Wholesale Wired Headphone Noise Cancelling Headphones for Computer Accessories Model NO.: VB-108NC Jack Diameter: 3.5mm Function: Multimedia, Noise-Cancelling, HiFi Usage: Home Theatre, Aviation, DJ, Portable Media Player, Computer, Mobile Phone Communication: Wired Color: Black Wire Material: PVC Material: Plastic Desc: Wholesale Wired Headphone Noise Cancelling Headpho Quality: High Cord: 2.0m Speaker Size: 40mm Package: Polybag, Blister or Gift Box Delivery: Around 30 Days Impedance: 32ohms Plug: 3.5mm Stereo Trademark: N/A Transport Package: Polybag / Gift Box /Blister Specification: CE/ROHS Origin: China HS Code: 85183000 Product Description Wholesale wired headphone noise cancelling headphones for computer accessories1) light weight and swivel design2) perfect sound3) flexiable plastic headband4) Portable , easy operation5) Customized logo is accepted6) High end proteinImitation leatherette ear cushionSpecification:Speaker:40 mm Dynamic type1.Magnet: NdFeb2.Active Noise-Cancelling3.AAA battery(not included)Impedance:32 ohmsSensitivity:105dB±4dB Frequency:20~20000Hz Active cancellation:up to 15-18dbMax input power:100mW Cord length:(1.8M)±3%Connector:3.5mm stereo plug*1