Today we’re reviewing the Sennheiser 4.50 BTNC headphones. And I know these headphones are a little over a year old now. But these headphones went on sale on prime day for just $98, which was a ligit steal. And I'm willing to bet these headphones are going to go on sale again on black Friday 2018. So whether you’re planning on getting these headphones at their full retail price or on sale, lets see what the Sennheiser 4.50BTNC are all about.