Features: brand new and high quality The LED indicator shows the working status. Microphone indicator: the light goes out when the microphone is muted Support ordinary speakers or earphones, free switching of speaker and earphone modes .Use the USB port directly, universal plug and for play. Sound card without external USB driver Wide compatibility, support trs/trrs mode. Specifications: Version: 2-in-1 (Mic&Earphone) x 1 , Microphone x 1 , Earphone x1 SNR：>=80dB Frequency Range：15Hz - 25KHz Other functions：Silence switch, Volume adjustment Material: ABS Color: Black Quantity: 1 Piece Cable Length:appx.10cm/3.94in Package Includes: 1 x Sound Card note: The default microphone is omtp. If the default is ctia, the microphone part will not work. The product button will be raised, please see the actual picture in the evaluation before buying Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!