Sennheiser CX 686G SPORTS In-Ear Headphones


Product: Sennheiser CX 686G SPORTS In-Ear Headphones
Provided By: Sennheiser
Price: ~$69.99 MSRP at time of publication



I enjoy music and was very glad that Sennheiser sent the CX 686G SPORTS for us to review. I was asked if I could do the review and when I found out it was from Sennheiser, I thought I'd give them a try. I then discovered that the product was a pair of earbuds, and I lost a bit of enthusiasm. Earbuds do not stay in my ears and often hurt. With that in mind, let's get into this review to see if the CX 686G SPORTS are indeed what I have been looking for.



First Look:

At first glance these In-ear headphones look uncomfortable with the hook at the top. They come with three different sizes of Antimicrobial ear adapters, have an in-line "smart" remote and microphone.



Also included in the bundle is a soft case to store these bright-green earbuds and their nice flat cord that doesn't tangle easily. On the cable, there is a clip that you can use to attach these to your shirt or coat so that the cord doesn't pull these out of your ears. This is a nice touch that doesn't come with many other earbuds I've seen and tried. 

Piled Up


On the next page let's look at the features and specifications of the CX686G SPORTS, then continue on to testing.



The following features and specifications have been taken from the Sennheiser product page and posted here for your convenience. If you have any questions and want the upated information, please be sure to check the manufacturer's site for all the details.


Make the most of your time at the gym with Sennheiser's CX 686G SPORTS. The innovative Slide-to-Fit mechanism ensures that these earphones sit securely and comfortably while you stay focused on your workout, and the high-output drivers deliver stereo sound that will inspire you to new levels of performance. Lightweight yet robust, the CX 686G SPORTS is also rugged enough to withstand the punishment of heavy-duty use, and thanks to the clever design of the ear canal coupling, you'll be able to enjoy your favorite music without distracting background noise.

In-Ear In-Line Control


  • Inline smart remote and mic on the cable are compatible with most smartphones and portable players (including Android, Windows Mobile and Blackberry devices)
  • Maximum ruggedness and durability - Sweat and water-resistant
  • Sealed in-ear-canal design for improved blocking of outside noise
  • Antimicrobial ear adapters (SteriTouch)
  • Slide-to-fit system is fully adjustable for an individualized fit
  • Para-aramid-reinforced cable provides superior strength and reliability
  • Oval-shaped cable ensures a tangle-free listening experience and reduced cable noise
  • Convenient storage pouch and cable clip included
  • 2-year warranty




On the last page, we'll cover testing as well as wrap up with our final thoughts.



The only way to test in-ear headphones is to use them with everything I could find.  My HTC M8 is my primary device on which I listen to music, audio books and make phone calls. The in-line remote was very nice as I didn't need to reach into my pocket for volume control or to play and pause media.

Sennheiser claims that the CX 686G Sports are able to withstand sweat and water. I am not an avid sports person, but I do live on an acreage. I have a very big yard and vegetable garden to maintain. In the course of keeping things looking good, I do tend to get a bit warm and sweat while I'm very active. The CX 686G stood up to the task. As far as a full breakdown, I was impressed with the CX 686G Sport for three main reasons:

Yes, that is right. Every other in-ear headphone I have tried to use did not stay in my ears. No matter what it did (bent over weeding, hoeing the garden, mowing, weed whacking) or how much I sweated, the CX 686G Sports stayed in place.


After 20 minutes of use, most in-ear headphones hurt my ears, but that is not the case here.  Even after two hours of constant use, the CX 686G still sat comfortably in my ears. I think the hook at the top of the buds helped with pain and kept them comfortably and securely in my ears as well.


They are made by Sennheiser so I did expect them to sound pretty good. With the CX 686G Sports blocking most of the ambient noise, the listening experience was even better. Vocals, whether in Audio Books or music was clear and crisp. No matter how loud I played a wide variety of music, it was very clear and seemed to be well balanced. Bass was deep, mid-range was clean and the highs weren't harsh or overbearing.
Phone calls sounded just fine and the microphone picked up nicely and other people were able to hear me clearly as well. I can often have trouble hearing people clearly on a phone, but the CX 686G was wonderful.



As we wrap up this review, I will admit that I was surprised by the Sennheiser Sport CX 686G. I did not actually expect them to be something that I would like to wear on a daily basis. The look a little aggressive and the design looks like it could be a bit painful. I was wrong. They fit really well and I never had any issues getting them to stay in my ears.

While I knew the sound quality would be fantastic, I didn't expect it to be quite so clear from a small set of drivers. While the price tag of $69.99 MSRP may scare some people away, they are worth every penny and will outlast and outperform any cheap earbuds that you buy at your local big-box store. Once you have these, I doubt that any other product will do.

The headset is durable and the bright green color as well as the storage pouch will help you keep track of it. I know it may sound like I'm trying to sell this product for Sennheiser, but they are so good, they really sell themselves. I plan or picking up a pair myself once I send these back. They are that good.


I’d like to thank Sennheiser for sending over these for a review. If you have any questions or comments, please feel free to post them in the forum here.