TechMate Stereo Headset with Mic BlueTechMate Stereo Headset with Mic is a lightweight and have a fold-up headband making it easy to store and travel-friendly. With its comfortable fit, these headphones are great for portable audio devices. Plus, these headphones give you the best sound quality for all your favorite tunes. The TechMate Stereo Headset with Mic is designed to keep your ears comfortable with foam ear cups. Wear the microphone on the right or left and rotate it out of the way while you watch a movie. Speak clearly with this simple, easy-to-use analog headset. Sounds good with full stereo sound, your headset is great for voice and video calls. Loud and clear the noise-canceling microphone cuts background noise-and rotates out of the way when you are not using it. Easy setup just plug your headset into the 3.5 mm input and output jacks on your computer and it's ready to go. Features Trumpet diameter:40mm Rated power:10mW Impedance: 32 Ohms Sensitivity:119 3dB/mW Frequency response:50-20,000Hz Largest power:20mW PlugType:3.5mm stereo Cord length:1.2m Microphone sensitivity:58=3dB/mW CE/ROHS