Expert Reviews: 
User Reviews: 
Value for money

Sennheiser CX 680i review

Verdict: Nothing says sport like yellow and the Sennheiser CX 680is are no exception to this rule. The EarFin design seems almost an afterthought but it does keep them in place and the sweat-resistant CX 680is are easy to fit, super-comfy and secure.
July 2012

Sennheiser CX 680

Verdict: Not a replacement for your audiophile in-ears, but a fine perfect sporty alternative. If you run, get a pair of these
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August 2011

CX 680 Sports review

Pros: Good sound quality, ingenious ‘earfins' designed specifically for runners
Cons: Cables can get tangled, microphone only on CX 680i model
Verdict: Keeping in-ear headphones firmly in place can often be a bit of a problem, especially when you're working up a sweat, so the earpieces on the CX 680 can be fitted with a pair of flexible rubber ‘earfins' that fold inside the curve of your ear and help to keep them secure.
May 2011
Macworld UK

Verdict: Weighing in at just 14g these Sennheiser CX 680i Sports are lightweight and compact. The 1.2 metre cable is super thin but still manages to come with inline controls and microphone built-in, so it's perfect for use with your iPhone as well as your iPod.
April 2011

Sennheiser CX 680i Headphones Review

Verdict: Ever since my first iPad, I've been using Apple's traditional white earbuds. When I got the opportunity to take a look at Sennheiser's CX 680i Adidas Sport In-Ear Stereo Headphones, I suddenly realized what I've been missing all these years.
Read full review at MyMac
March 2011

Verdict: Keeping in-ear headphones firmly in place can often be a bit of a problem, especially when you're working up a sweat, so the earpieces on the Sennheiser CX 680 Sports can be fitted with a pair of flexible rubber ‘earfins' that fold inside the curve of your ear and help to keep them secure.
March 2011
PC Advisor

Sennheiser CX 680 Sports

Pros: Excellent audio performance with strong bass response. Comfortable fit. Stays in place even during intense workouts. Waterproof, sweat-proof.
Cons: Some cable thump when running. Neon yellow color won't appeal to everyone.
Verdict: Gym-friendly earphones have typically been referred to as such because they either stay firmly in place or endure physical abuse without immediately dying. And in the past, Sennheiser has made respectable earbuds for exercise, but a new partnership with Adidas takes workout listening to a new level.
March 2011
PC Magazine

Verdict: The remote & mic are located at the neck split, and are encapsulated in a bit of black plastic. The controls themselves are a yellow bone-shaped bit of rubber. The top node is volume up, the bottom is volume down, and the space between them controls playback (one click to pause/unpause, two to...
December 2010

Review: Sennheiser-Adidas CX 680 Headphones

Verdict: I had the opportunity a few months ago to meet Jeff from Hummingbird Media, and had a great talk with him regarding the Sennheiser brand of headphones. I expressed an interest in checking them out, and was pleasantly surprised by the product.
May 2010


Verdict: very good quality headphones with only 1 minor drawback being the volume control is very easily moved! though this is mainly while in the gym so p[robably not a problem for most other uses
Read full review at Amazon
January 2014

Fantastic Product

Pros: Decent sound for the price Stay in ear with the correct fittings Very durable
Cons: Might take some personal habit changes to make them work for you Volume control is the weak link in this chain
Verdict: Used these for lifting, running, and crosstraining for the past 18 months. Was very happy with the sound compared to other sport headphones. Was more than pleased (read relieved) that they actually stayed in my ears during activity once I tested out a few different fitting pieces to find the correct...
Read full review at Newegg
May 2013


Verdict: For those who are wondering what the extra pricing is for, let me clarify the points: 1.The cable is of extremely high quality and has great tensile strength. It is also waterproof and 100% sweat and humidity resistant.
March 2013

Good Concept, Lacks Quality

Verdict: I liked these headphones well enough before the right earbud stopped working, but for this kind of money, other factors should be fined tuned. Factors such as: length of the headphone wire (either too long or too short), the heaviness of the volume control (when you run, the weight of the volume...
November 2012
Circuit City

great sound for the gym rats!

Verdict: I lobe these buds. They are by far the best buds I have used in the gym. The amount of sweat and grime that goes through my workouts and they are still going strong. Very durable. Sound has great bass, defined highs and lows.
October 2012

good sound and fit, bad quality

Verdict: Sound quality and fit are as good as advertised really nice feel unfortunately the headphone quality itself is not so good, in my particular case i sometimes the sound cuts off if you touch or shake the connection jack, there's seems to be a connection issue.
Read full review at Ebay
September 2012

Pros: Great noise canceling, Sweatproof, Water resistant, Volume control
Cons: No mic, No Skip/Play/Previous buttons, Awkward volume control position, Symmetrical cord
Verdict: This really is a great set of in-ear sport earphones. The noise cancelation is really good, I used it while biking and on public transportation too - had no issue with outside noise.
Read full review at
January 2012


Verdict: Great Service by the vendor hats offf Superb I am highly impressed by the service the vendor has provided. Great
Read full review at
June 2011

Quality Sport Headphones

Pros: Sound quality, sport design
Cons: Nothing
Verdict: These are great for working out or just about any activity, even traveling. Noise canceling feature and audio quality is very good, as you would expect from Sennheiser. Very balanced, with good bass. The ear fins make these impossible to fall out. Well designed product. Would highly recommend.
April 2011

Wow..!! Spectacular !

Pros: Comfortable, Compact, Durable, Good Bass, Good Value, Great Sound, Lightweight, Stylish
Cons: Cord Too Short, Without the volume contro
Verdict: if you run and want an incredible pair of earphones look no further i am an avid runner and have been searching for a long time these sennheier cx 680 hit it out of the park high quality all the way around the sound is astonishing and they dont move once placed in the ear wow how amazing is that buy
April 2010

Fixes one issue but causes another

Verdict: Amazon Verified Purchase ( What's this? ) I decided to upgrade to the CX680s after using a pair of CX380s for the last 6 months. The 380s were pretty good but didn't always stay in place during my workouts. The good news with the CX680s is the ear fin technology works really well.
March 2010
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