Amazon.com: Sennheiser PXC 550 Wireless – NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life : Electronics
HD 450SE | Sennheiser
Amazon.com: Sennheiser PC 3.2 Chat - Lightweight Stereo Headset With Adjustable Noise-Cancelling Microphone - for Internet Telephony and E-Learners - PC Connectivity- Great for Gaming, Work, & Study : Video Games
Sennheiser M4AEBT Momentum 4 Wireless Headphones - Black | Sweetwater