Bests & Worsts Reviews from Amazon

I've wanted to buy another Sennhesier headset for awhile, I've used my wired Momentums and my older hd558s for years and loved them for different reasons. I also have a pair of Bose Soundsport pulse Bluetooth headphones, Bose Soundtrue 2, and a cheaper pair of Bluetooth headphones called Taotronics an earbud design that I bought on Amazon for around 30 bucks. These headphones are on par with the comfort of my Bose Soundtrue 2 which were my most comfortable until these came along. Now that I've used high end Bluetooth earbuds from Bose I wanted to try a Sennhesier Bluetooth option and these just came out and I saw them at CES. What you expect first and foremost from Sennheiser is great sound quality and the HD4.40s certainly do not disappoint. Clear crisp high and mid with punchier bass than in my other Sennhieser headphones, hd558s are open back so bass isn't expected. These are warm I truly love the sound for listening to music of any type and they serve well for podcast as well. The build quality is solid and not the most premium but for the price it's expected and they do feel and look good and are strong, Sennhieser typically uses premium materials and the surfaces all feel great just not a lot of metal or leather. Although the leather earcups are better than my Bose and Sennhieser Momentums. I do like how they fold up to easily fit in my bag. Wireless is the main reason I bought these because I wanted a great sounding over ear headphone and I knew Sennhieser wouldn't let me down and they've blow me away. Range is great and the battery lasts for days with 24hr use advertised. If you are using them for bursts they are gonna last along time which is huge for me. I'd tell you to go buy these if you want a very nice sounding over ear Bluetooth headphone I can't see how these would let anyone down. I'll update if anything changes. UPDATE: So I fully charged the headphones when I first got them and I've used them for over 8 hours of use with days in standby and I'm not kidding the batter is still at 97%. Really incredible battery life, amazing sound for the price. They sound much better than my Bose Soundtrue 2 and those cost more and aren't Bluetooth although the Bose are more compact. I'm so impressed with the battery life his far. Will update further in a few weeks. UPDATE 3/27/2017: One negative thing that has happened is that the Sennhesier brandin in the top band has completely worn off. It isn't scratched there, no damage it just wore off over time. Pretty sad even though it's not a big deal. I won't take a star off for it I but I think Sennhesier overlooked what they used to print that branding with.