Livescribe 3 D Recording Headset Earbuds give you 360-degree binaural recording capability, making them an excellent choice for use in large lecture halls or conference rooms. This item also helps reduce ambient sound and background distraction in noisy environments. Designed to work with Ski WiFi and Echo smartpens, this device delivers superior audio quality for your listening enjoyment. These earbuds with microphone are ideally suited to students and business professionals. They're ultra compact so you can store them in an accessory pouch or pocket for easy access. 
Tech Specs AAA-00020 Livescribe 3-D Recording Headset Earbuds:
Works with all Sky WiFi and Echo smartpens
Binaural recording precisely captures everything you hear around you
Record in high-quality stereo
Ideal for long-distance recording and playback in large lecture halls, conference rooms or noisy environments
Livescribe earbuds frequency response: 20Hz - 20kHz