The audio market is embracing wireless devices now more than ever before. Sennheiser is seeking to tap into this market trend with their Momentum family of devices, and today we are looking at the Momentum In-Ear Wireless (M2 IEBT) pair of earphones. Using a stylish nappa leather neckband, Bluetooth 4.1 connectivity and a claimed 10-hour battery life, could this be the perfect pair of wireless earphones?