Well, it's widely recognized that QC45 is very good. This has been my first time to try/test it. So far (first week) it even exceeds my expectations. Base is outstanding, treble is clear (yes, all bells and whistles are there), mid range is dominant. Not too light, not too heavy, kinda' pleasant to wear. Support is great. Let me just note very quietly that noise cancelling could be a bit better. (Actually, not too bad but not good, either.) Overall impression: highly recommended. Fast Amazon shipping. Thanks.

Just used these on a 10 hour plane ride. The noise cancelling was tremendously helpful, I aint be hearing nothing. The music sounds very different compared to my other earphones. The sound quality needs to be experienced, it cant be explained.

Screaming baby in the row ahead of you? No problem slip these on and turn on some tunes and relax. Should have had these years ago.. very comfortable and sound quality is all Bose.

Where do I start.. On opening the Amazon shipping box the first thing I spotted was a poorly wrapped headphones with improper packing. The Red Flag went up right away. Then removing the phones and opening their travel case more bad news. Missing was any type of owners booklet or manual. Without the bar code to photograph how do I get any basic information on the phones? Another Red Flag went up. The next thing I noticed was the charging cable was white, clearly not a Bose accessory. Third Red Flag flying in the breeze. Not wanting to waist my time here charging the battery I plugged in the 3.5 mm audio cable to test the unit which I knew would be defective. Bingo - the audio was indeed defective. I quickly boxed everything up and made my way to the Whole Foods return counter in my neighborhood. Off and away back to the big A. Bottom Line: Don't buy refurbished at Amazon it's a real crap shoot. They obviously recycle defective junk.

I spent an entire career travelling on planes and working on commercial ships, and the original Bose QC wired headphones were my constant companions. I love that the ear cushions are replicable! But I wanted wireless freedom. I tried wireless adapters for my old faithfulls, but they were unreliable. So when I found a pair of wireless 45 QCs on sale I jumped on them. I still think they are the OG for over the ear comfort and the peace of noise cancellation.

The headphones are comfortable, sound good, last all day, and have good noise cancelling. They are sturdy and reliable. I use them for my daily work and all of my frequent airtravel. The technical aspects are all just *slightly* better on the Sony WH-1000XM5. I wish Bose had fully closed that gap. That's why I'm only giving it 4 out of 5 stars. However, the Sony headphones break very easily, and Sony will not repair any "physical" defects. The Sony's broke within two months of getting them, doing nothing more strenuous than *putting them on*. These Bose headphones on the other hand have not broken, despite all-day every-day use and frequently being packed up and used in travel. The Bose headphones are not the BEST in terms of technology, but they are very very good, and they're quite sturdy and reliable.

This was my first time ordering something from Amazon renewed. I took a chance and ordered and I’m so happy I did. They look brand new, came in a Bose case and were fully charged. I downloaded the Bose app and was able to easily pair the headphones to my iPhone. They feel and sound amazing!

These may not be top of th line but sure sound FANTASTIC@

J’ai acheté un produit réusiné et j’avais des doutes. Les écouteurs étaient comme neufs et fonctionne t parfaitement bien après plusieurs mois. L’économie va un neuf en vaut la peine.

After trying a couple of other brands of headphones and returning them both I bit the bullet, upped the budget and opted for these. Refurbished they may be, but they were like new and flawless. The sound, as I've come to expect from Bose, is excellent. They fit over my large ears completely and are very comfortable. There is also an external headphone port for listening the old-fashioned way and here is my only beef with the unit - the jack is 2.5mm instead of 3.5mm, which limits the options for replacement. Bose does sell them and they are not expensive, so this is a minor complaint There are some controls on the earpieces. They are logically laid out, easy to find by feel alone, and work well. I can't speak for battery life because I have not have them long enough, but overall I am delighted with this purchase.

Excelente producto, calidad, sonido, precio. Muy Recomendado. Cumplió con todo lo indicado por el producto.

Lo compre como renovado y no sé si es por eso que de pronto al conectarlo a la laptop el ajuste de volumen no es el adecuado, adicional si esperaba sentirmeas aislads del ruido exterior. Aún con lo anterior me parecen buenos por qué la música se escucha genial, y la comidas al ponerlos tambien es muy buena

Excepcional sonido y bloqueo de ruidos. Cumple con las expectativas.