Meco Rj11 Call Center Headset Telephone Corded Wired Microphone Office Head Phone

Features: Compatible for the most telephones in call center Headset head can freely telescopic, moderate elasticity, comfortable to wear. Super soft ear cushion, make sure to wear comfortable. High durability, fully adapt to 7X24 hours for high frequency. CID of FSK/DTMF. Volume adjustment, noise-canceling. Microphone type:electret condenser microphone(ECM) Microphone sensitivity:40db3db Microphone voltage:2.0v Receiver impedance:15010 ohm Package Included: 1 x Hands-free Headphone