I have been through three or four different pairs of these same headphones from different brands, first from the Arctic, the P311, then from Soundbot with the SB220, then from Kinivo, then from Soundbot on the SB240.Word to the wise: BE VERY GENTLE WITH THE POWER BUTTON. The most fragile and important and mostly used button and function on these headphones is that power button, if that power button breaks on you, as things are broken and are worthless, so don't break that power button, push it as gently as you can to get them to work, and make this a habit and they will last a long time.I have had a couple of pairs have their power button broken because they were pressed down too roughly. No amount of troubleshooting ended up getting these headphones to completely work again, I did strip off the outer shell and was able to press the hardware button inside, but eventually even that broke. SO GO EASY ON THAT BUTTON!!! And you won't have to buy replacements! So I have tried all these different iterations of this same pair of Bluetooth headphones.The battery life is fantastic. They can go up to 20 hours.The versatility is fantastic.----PROS:1. Durability. I got my first pair of these headphones as the Arctic P311 for $24 or so on Amazon in 2011 - AND I STILL USE THEM!!! They are kicked around my house by myself my son and wife. They have been on 25+ vacations/road trips with me. They have been in for hundreds of cardio sessions running or tennis or weights, they have been through hundreds of commutes and driving sessions. They have been used so heavily and seen so much sweat they have rusty screws and charging port!!!Look at these pics!!! To understand the abuse these things have withstood!http://puu.sh/k1fEW/5291dc9c45.jpg2. Durability part 2. Ear cushions. They do not lose their foam cover. Despite the lesson feeding you see those 2011 headphones if taken, rusty and all, those headphones have been sweat-logged (gross) dozens upon dozens of times from my cardio workouts. They are still working, despite rust, and the foam cover has not ripped. And as I have said, I have had a few of these pairs, and never have any of them ripped, quite durable in this regard as well.3. Quality sound. They have good enough stereo quality to work for listening to music, great for working out a course.4. Loudness. They are louder than most earbuds.5. Battery life. Their battery life makes them a good choice for all types of scenarios. If you are going on a long road trip or will be riding on a bus trainer plane, because these have such a great battery life, these are a great choice for listening to music or podcasts or using with your phone or tablet while traveling or in any scenario.6. Comfort/Design. The behind the neck design. Because of this design, you can just wear these headphones around your neck when not using them, so you don't lose them, and you don't even have to take them off, they just hang around your neck. This has an added benefit, you turn the volume way up, you can hear these without even having to have them on your ears, so they can have a secondary function, or give the ears a break. For example for myself, I work at home taking calls, so I don't feel like having my ears trapped by headphones nonstop, so if I just drop one year or drop both ears around the neck and turn the volume up enough so I can hear it, my ears get a break.7. Functionality/Versatility/Compatibility. These work as stereo headphones, good enough quality for music. These work as a Bluetooth headset, so they can be used to talk on the phone while driving or doing other things. They work as a headset on the PC, so I use these as my main headset for my job taking phone calls. His work as stereo headphones for the PC, so you can either choose headset mode which has only phone quality and allows for the use of the microphone and the headphones, or you can use stereo mode which does not allow the microphone to be used, but gives you full quality stereo.8. Compatibility. Since they work with any phone tablet or laptop, these are an ideal choice to keep around, they will work with anybody's device.9. Wires. No wires to trip over of course. This is great for exercising, wires stay out of your way and don't distract you.10. Headphone Jack broken? Save your headphone jack on your tablet or phone. Because you don't use the wire or use the headphone jack, you can't break it and you don't have to worry about itbreaking. Also, if you have a broken headphone jack on your laptop phone or tablet, these headphones work perfectly so can actually save you. I personally prefer not to even risk my headphone jack, I just keep these laying around.11. Convenience. Because you can just leave these things on around her neck, you will not forget them or lose them as easily or often, you can fall asleep with them on, if you need to stop and talk to someone or you need to stop and do other things, you can just drop them around your neck and it doesn't bother anything.12. Price. Now these things have become so cheap, they are nearly the same price as a $10 pair of earbuds. So you get all these added benefits at nearly the same price as earbuds, and you don't have to worry about wires, losing them, headphone jacks… At this low of a price, they are a no brainer.----CONS:1. Bulky. They stick out from your ears, and they look kind of funny. But in my opinion it is a small price to pay for the ridiculous bang for buck and battery life these things give you.2. Bright light. These have a bright light in them. If you sit or lay in absolute darkness, they can light up half the room lol. If you are laying down with your partner in bed, this may distract your partner from sleeping.3. Power button. I have broken the power button on two pairs of these. Some of them fairly new. So like I mentioned at the beginning of this review, try to go very easy on that power button so that you can get the most life out of these headphones without breaking them. Press it very gently.