JLab JBuds J4 earbuds are designed for maximum enjoyment and durability.
JLab JBuds J4 earbuds are durable, flexible, and have very decent audio output.

JLab JBuds J4 earbuds had nothing that could be considered "bad" for the price tag of 39.95

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JLab JBuds J4 Review
Durable and High-Quality… for any occasion.
JLab JBuds J4 earbuds are advertised as being a type of earbud that balances audio quality and durability, and more than pulls through on its offer. The earbuds come in a variety of colors. They also come with 7 custom molded earbud cushions, both single flange (XS, S, M, L) and double flange (XS/S, S/M, L/XL). Having the extra ear pieces can come in handy if you loose a set. They have not fallen off yet for me and seem to hold in place very well, better than many other brands. They are just a bit heavier in weight than most of their competitors, this also ensures that you'll be able to enjoy them for quite some time. The cables are also designed to be tangle-free and strengthened with Kevlar, along with the ability to reduce external noise at virtually any volume.
The packaging is very basic. No shiny box or frills. The Jbuds J4 come with a hard shell caring case. The case is rather big for the size of the earbuds but that can be a pro as it will be hard to loose yet it will not easily fit into a tight pants pocket.
The tangle free aspect of the cables is so nice. Most earphone cables quickly tangle, from our testing's we found the flexible cable on the J4 earphones very durable, flexible in design and hard to tangle when put directly into pocket. At the Gym on a tred mill I was able to run 1.5 miles with out the Jbuds J4 falling out once. A clip did come with the headphones and it did help to keep the cord in place while I was running.
For the price tag of $40 bucks this really is a great buy and a product I would acquire again. I should note that I did wash the headphones once in a washing machine. They survived and I can not tell any degradation from the event.
For $10 dollars more you can get the Jlab JBuds J4M that have a mic. We did not test this version out but it seems to be of the same design with a mic added in. That version is compatible with all iPods, iPhone 3G, 4G, HTC, Android, Blackberry, Kindle, iPad, laptops, and any device with a standard 3.5mm jack. Basically the same as the J4 but with a Mic
JLab JBuds J4 earbuds are priced at $39.95
Technical Info:
Drive unit 2xo8mm Frequency Response 20-20khz
Impedance 16ohm +/- 15%
Sensitivity (at 1KHZ) 90 +/-3dB
Cord length: 129cm
Plug Type: Dia. 3.5mm Stereo Gold Plug
Max. Power: 3 mW
Channel Balance: <5% at 1mW 1KHZ
Where to Purchase:
http://www.jlabaudio.com/jbuds-j4-rugged-metal-earbuds—highly-durable-with-flat-cable-p-279.html
See the Amazon website for JLab JBuds J4 Earbuds