Amazon.com: Sennheiser HD1 In-Ear Wireless Headphones, Bluetooth 4.1 with Qualcomm Apt-X and AAC, NFC one touch pairing, 10 hour battery life, 1.5 hour fast USB charging, multi-connection to 2 devices : Electronics
Sennheiser HD1 Bluetooth Earbuds feature leather detailing for $137 (Reg. $200)
Amazon.com: Sennheiser HD1 In-Ear Wireless Headphones, Bluetooth 4.1 with Qualcomm Apt-X and AAC, NFC one touch pairing, 10 hour battery life, 1.5 hour fast USB charging, multi-connection to 2 devices : Electronics
NIB Sennheiser Wireless Special Edition HD 4.50R Headphones | eBay
Sennheiser Consumer Audio Bluetooth Headphone 4.2 with Qualcomm Apt-X and AAC, 1.5 Hour Fast USB Charging, Multi-Connection to 2 Devices : Amazon.in: Electronics
Sennheiser Consumer Audio Bluetooth Headphone 4.2 with Qualcomm Apt-X and AAC, 1.5 Hour Fast USB Charging, Multi-Connection to 2 Devices : Amazon.in: Electronics
Sennheiser MOMENTUM 2.0 In-Ear Wireless review
Sennheiser Momentum 2.0 and Wireless! | Page 243 | Headphone Reviews and Discussion - Head-Fi.org