Logitech's negotiations to buy headset maker Plantronics for $2.2B fails | AppleInsider
Logitech in talks to acquire headphone maker Plantronics - ARN
Lot of 5 Mixed Vxi Plantronics BW3300 C3220 Logitech A-00064 USB Wired Headset | eBay
Plantronics Voyager 5200 (Poly) Wireless Bluetooth Headset & Logitech C920 HD PRO Webcam, Full HD 1080p, 78° Field of View, Auto Focus, Clear Stereo Sound, Exposure Compensation - Black : Amazon.de: Electronics & Photo