[Blue] [This review was collected as part of a promotion.] I've had these headphones for about a month and I'm really enjoying them so far. Initially didn't like the way the headphones felt on my ears, they felt too small. I had never used on ear before, so the fit was different than I expected. But after using them for more time, they got more comfortable. Still not the most comfortable set of headphones I've worn, but better than I Initially expected.

What I have really enjoyed, so far, is the great sound from these headphones. Additionally, the noise canceling works very well. I wore them while mowing my lawn, and the noise canceling did a great job of minimizing the sound from the mower, allowing me to enjoy my music without having to turn it up extremely loud.

I have been very impressed by the battery life. I used them regularly for over a week and still had over 50% battery life left. I haven't had an opportunity to test if I can get three hours of listening time with only five minutes of charge time, as advertised, but I would believe it based on the battery life I've experienced.

I travel a lot for work, so I am liking their compact design that has been great for traveling because they don't take up much space in my carry-on. I also appreciate the auxiliary cable that comes with the headphones, so I can use the headphones with onboard entertainment systems on some flights.

I easily integrating the headphones with Google Assistant. But more than Google Assistant, I really enjoy using them with the JBL app, giving me the ability to adjust more advanced settings (voice aware, equalizer, turning ambient aware, and noise canceling on and off).

One final perk is, with the solid noise cancelling, I am able to use the product to listen to my own music or audiobooks while my kids are watching a movie or show.

[2] [This review was collected as part of a promotion.] Perfect headset, excellent sound quality and noise cancellation. It is very comfortable on the head and I use it in the gym as well because it is light. I like the black color, it is very chick and modern.

[Yes] [This review was collected as part of a promotion.] I have never used headphones for anything other than work and these exceeded my expectations. I first became familiar with the buttons which seem to be very simple to use with not alot of options. I first tested out the overall sound listening to music and was amazed by how crisp the sound was. Then I made a phone call and my sister had no idea I was using headphones and not the phone itself. Third I used the headphones for my work meeting, and again got positive feedback that my teammates could not believe how clear I was coming across when talking. Finally I wore them during my evening workout and they never moved or slid off my head. Overall I am very impressed and happy with the headphones!

[0.845 lb] [This review was collected as part of a promotion.] I’ve always wanted a pair of on ear headphones that are comfortable and won’t irritate my ears as I have many piercings. These headphones are made with very good quality. I like the detail that was put into it. The top of the headphones (band part) have a nice soft fabric and the ear part is made with a soft cushion. I mainly used them while working out. They stayed in place while I was doing jump squats and all other activities and they did not slip off despite the sweat. They were easy to clean and I put them back in the protective pouch after. They sound phenomenal and with a quick tap on the side I can pause my music. They are great with noise cancelling so I can really focus but also have an ambient aware setting so I can be aware of my surroundings if I’m walking in the street. I took a few phone calls and I hear the voices very clean and the other person says I sound very clear as well, so the microphone picks up very well. One charge lasts so long so the convenience of not having to constantly charging them is great. The style is nice and sleek, not bulky all. These are great for anyone honesty, anyone can enjoy these as much as I do. I was be taking these with me on my next trip.

[95 dB] [This review was collected as part of a promotion.] Pros:
Lightweight-Incredibly comfortable to wear, I forget I have them on.
Battery life-SUPER long, I've not measured the 70 hours battery claim, but they lasted two international flights with multiple layovers and zero charging interruptions. I've been super pleased.
Sound-Gotta love the JBL bass....no surprises there.
JBL app-easily control noise cancellation, audio quality, music vs movie, etc.
Pairing-Pairs with 2 devices.

Cons:
Not over the ear-It's not super clear from the pictures, but the headphones aren't designed to fit over your ears. Like I've said, it's lightweight and compact and still does the job of active noise cancelling well, but if you're expecting headphones that will cover your ears, these probably won't.

[2] [This review was collected as part of a promotion.] I'm truly loving these headphones after listening to them. These are a compact style of headphones, and fold up nice to fit in a purse or backpack. I also found out that you a variety sound options with the JBL app. The sound from the Tune 670NC headphones is very good for being compact.

[32 Ohms] I about in May they work good . So soft to my ear I like to sleep in them .

[Lithium-Ion] [This review was collected as part of a promotion.] The JBL live 670NC with noise canceling delivers a crisp sound with a boomy base. They connect very quickly via my android phone and are very, very comfortable. The ear cups do not hurt my ears at all. The sound is balanced with lots of base, but you can use the JBL headphones app for more customization and versatility. You can customize your Equalizer or use use the preset Equalizers on the app. Voice assistance can be customized to Google assistant or Amazon Alexa. The noise cancelation works very well, and you can use the ambient aware. The buttons on the side of the earcups are very easy to reach at your fingertips. The headphones tell you when the power is off or on or when the features are on with a female voice. The headphones are truly amazing and compact. They have spatial sound too for that inmersive sound. The battery is very long lasting, while playing music for up to 65 hours.The included carry bag is very nice with the JBL logo. Overall, I love the JBL Live670NC balanced sounds and how compact it is. JBL has created another compact headphone masterpiece with lots of features. You will not be disappointed with the size and sound of the size of the JBL live 670NC.

[Closed-Back] [This review was collected as part of a promotion.] With soft ear muffs and just the right amount of tension on the headband, the 670NC is so comfortable to wear for hours long. Even with the smaller cups the sound is top notch which can be expected from JBL products. The 670NC works great on long flights thanks to the noise canceling feature.

[1] [This review was collected as part of a promotion.] After removing the packaging and initial look, I could not find where to plug the USB cord into. After looking over the Quick Start Guide, I finally found it. Not everyone looks through the manuals first. Charged overnight. Set up the JBL Headphone app on my phone and away we go. Sound is very precise with very good bass. I have always liked the sound from JBL speakers. The fit is comfortable for me, very lightweight. I like the cordered option, although I will probably just use them wirelessly. There is a dust storage bag. I wish they had replaceable ear covers. My wife will also be using these on occasion. The wireless range was fine inside the house, but when I stepped outside started to lose the signal as I got further away. Not really a concern for me as I would always have my phone nearby. Controls are laid out nicely and easily identifiable. I wish you were able to connect to more than 2 devices, so the wife and I could both have phone connections, as well as my desktop PC. I like the equalizer function in the app and the use of Voice Assistant. Power off function was set to 30 minutes, but I usually just press the power switch on the headphones. Overall, a very decent set of headphones. Once winter is over, I will try them while mowing the yard. Of course these were free to me, but I would recommend purchasing these to friends and family. My last set of headphones were the SamplingQuantum 360P from JBL which I gave to my Son, who actually could use them better as I do not play games. So these JBL 670NC are perfect for my use.