Amazon.com: Bang & Olufsen Beoplay EX - Wireless Bluetooth Earphones with Microphone and Active Noise Cancelling, Waterproof, 20 Hours of Playtime : Electronics
Bang and Olufsen BM4 Ribbon Microphone – Cole Picks Vintage
Bang & Olufsen - B&O Play - Earset 3i - Black - Flexible High Quality Earphones Ultra Light and Adjustable - Remote & Microphone - Avvenice
Amazon.com: Bang & Olufsen Beoplay EX - Wireless Bluetooth Earphones with Microphone and Active Noise Cancelling, Waterproof, 20 Hours of Playtime : Electronics
Xaudia Microphone Blog: The Bang and Olufsen ribbon microphone family
BeoMic MD8 Microphone
Bang and Olufsen B&O Fen-tone 53 BM4 blue-ribbon velocity microphone – Retro Gear Shop
Xaudia Microphone Blog: Upgrades for B&O microphones.