Sennheiser Noise-Cancelling BT Headphones preorders for $169 + free shipping

on 3/19/2017
Amazon offers preorders of the Sennheiser Bluetooth Active Noise Cancellation Over-Ear Headphones, model no. HD 4.50 BTNC, for $168.87 with free shipping. That's the lowest total price we could find by $31. These closed-back headphones feature ear-cup mounted controls, NoiseGard active noise cancellation, Bluetooth 4.0 and aptX, and up to 19 hours of battery life with with Bluetooth and NoiseGard activated.

Note that they're expected to ship within two to four weeks.