Sennheiser PX 100-IIi On-ear headphones with in-line remote and microphone at Crutchfield
Sennheiser PX 90 - Mini Headphone Noise Reducing
Amazon.com: Sennheiser PXC 550 Wireless – NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life : Electronics