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Sennheiser OCX 685i Sports In-Ear Canal Headphones - White

3.7 out of 5 stars 230 customer reviews
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  • Robust moisture resistance for active sports use, rinse clean
  • Sealed ear canal design for blocking noise (indoor use)
  • Inline smart remote and mic on tough reinforced cable
  • Ergonomic ear clips for optimal wearing comfort and secure fit
  • Natural sound that delivers energising volumes to help motivation

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Important Information

Please abide by the directions of use contained in the packaging of this product or printed on it. Thank you.

Product details

  • Product Dimensions: 2.5 x 2.5 x 2.5 cm ; 23 g
  • Boxed-product Weight: 141 g
  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
    Find out more about our Delivery Rates and Returns Policy
  • Item model number: OCX685i-WHITE
  • ASIN: B0094R2H0Q
  • Date first available at 1 Jan. 2012
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (230 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

Product Description

OCX 685i SPORTS Headphone – Black/Silver or White/Silver

For all men and women who are truly passionate about their sport and their music, Sennheiser sets a new standard for premium sports headphones. Designed in conjunction with Adidas, these headphones have been tested extensively in the field for ergonomic fit, durability and reliability. Think of these headphones as‚ from Athletes for Athletes‘ who place rigorous demands on their equipment and don’t settle for compromise. Optimized for Apple users.

OCX 685i SPORTS Headphone
OCX 685i SPORTS Headphone
  • Ear canal design for custom, snug fit with additional soft silicone ear hooks for periods of really intensive sports activity
  • Perspiration and water-resistant, to easily cope with challenging conditions
  • Easy control of iPod and iPhone via an integrated remote with microphone
Learn more about the OCX 685i SPORTS

This sports line is brimming with ingenuity; from inner protection against perspiration and pouring rain, to the provision of a close, secure fit so that you are able to concentrate and focus on what really matters to you. What’s more, these headphones deliver an energizing beat to tune yourself into.

  • Ear canal fit blocks out background noise for complete focus without distraction, no sound leakage – plus you can listen at lower volumes
  • Extremely soft silicone ear hooks for extra secure fit
  • Punchy bass sound that is acoustically fine-tuned to deliver high volumes
  • Designed to absorb shock and minimize wear, heavily tested for intense periods of use – tough strain relief for example
  • Can be rinsed clean after use under running water (store air-dried) – perspiration and water resistant
  • In-line smart remote and microphone allows you to control your music and take phone calls (Apple devices only)
  • Customized fit – ear adaptor set
  • 2-year international warranty
OCX 685i Accessories
OCX 685i Accessories
Did you know?

Bringing together the best of both worlds, Adidas and Sennheiser continue to challenge standards. As a result, this is the fourth generation of this range and contains a choice of five different models. Each features a more secure holding mechanism that provides better wearing comfort, tougher cables to withstand any sports activity and a powerful and energizing sound.

Sennheiser recommends this headphone for...

Sportsmen and women who exercise outdoors in a built-up environment and need to be aware of traffic for example. Music lovers who are looking for a pair of headphones that will defy the harshest conditions that will also deliver great sound, an excellent fit and maximum comfort.


This headphone is compatible with any device with a 3.5mm headphone socket for audio, including iPod, iPhone, miCoach, other portable music/video players, mobile phones and audio-video systems that are installed in gyms (iPod and iPhone are trademarks of Apple Inc. registered in the US and other countries).


The OCX 685i is covered by a 2-year warranty. Sennheiser’s worldwide service network will provide swift and smooth handling of any case of warranty that might occur. Strict German build-quality standards.

Why Sennheiser?

Sennheiser is the brand of choice for many high-profile recording artists and live sound engineers, delivering the ultimate audio experience to people who crave true-to-life sound. For over 65 years, Sennheiser has applied its in-depth audio research to the development of premium headphones, microphones and headsets. Every Sennheiser product endures rigorous quality control tests to ensure you receive durable, great-sounding headphones that will withstand daily use in a variety of environments.

Meet the Range
Product Details
Product Details
Product Details
PMX 685i
TypeEar Canal Headphone with Ear Hook In Ear Headphone with Headband In Ear Headphone with Neckband
Frequency Response18 – 20,000Hz18 – 20,000Hz18 – 20,000Hz
Acoustic DesignSealed Acoustics Block Outside Noise (Best For Indoor Use Open Acoustics for Natural Sound (Best for Outdoor Use)Open Acoustics for Natural Sound (Best for Outdoor Use)
Impedance16 Ohms16 Ohms16 Ohms
Remote and MicYesYesYes
Cable Length1.2 m Symmetrical Cable 1.2 m Symmetrical Cable 1.2 m Symmetrical Cable
Connector Plugs3.5mm Angled Plug3.5mm Angled Plug3.5mm Angled Plug
Sound Pressure Level120 dB120 dB120 dB
Warranty2 years2 years2 years

Box Contains

The Sennheiser sports range is targeted at the sportsmen/sportswomen who are truly passionate about their sports and music. These sports afficianados listen to their headphones/headsets during their sports activities in order to motivate themselves further; therefore these headphones/headsets have been specifically designed and tested to sound good and to stay comfortable, secure and reliable throughout the course of their activity.

Spend more time on your training with the OCX 685i SPORTS headset as it features comfortable ear clips that are not only intuitively self-adjustable but also lightning-quick to put on. The ear clips stay secure to your ears so you no longer have to worry about them falling out or dislodging when you are pounding along on the treadmill. The ear-canal coupling attenuates well, while the cable routing minimises structure-borne noise, which means that your choice of music can inspire and spur you on, at the same time.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Colour Name: White / Blue Verified Purchase
~Sennheiser OCX 685i Sports In-Ear canal Headphones~

As an avid gym-goer and music connoiseur, I simply cannot rate these headphones highly enough.

Starting with the sound: any reviewers who claim that this piece of kit delivers mediocre sound quality is a sandwich short of a picnic (sorry guys - maybe it's time for you to go for a hearing test?) The rendering is exceptionally high fidelity for an earbud-type headphone, and delightfully balanced, with clear trebles, meaty midtones and substantial (though not overbearing) bass. Contrary to other reviews, the sound does not distort at high volumes. If you are listing to music at a volume high enough to cause these to distort, then it is DEFINITELY time for you to book a hearing test.

Moving on now to the sport element: the design of these headphones is simply exceptional. This is the only product - and I've tested my fair share - which does not budge despite an onslaught of veritable rivers of sweat. The design is so ingenious, from the positioning of the buds on their plastic mount to the shape of the earhook itself, that the noise cancelling in-ear effect is never compromised, and the fitting itself is weightless to the point of you forgetting it's there at all. The feature of the inline sponge sweat protector seems to be unique to the market, and it is frankly brilliant. It's washable, protects the integrity of the delicate sound-reproducing membrane of the headphone, and this product comes with a spare set of sponges for those of you who really effervesce copious amounts of salty juices.

Finally, the issue of phone compatability. Yes - the music features seem to be incompatible with some types of phone, but this should not come as a suprise to anyone...
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Colour Name: Black Verified Purchase
I bought these to replace my CX680s which had a few design flaws of their own over the years and having a several replacements through Sennheiser's excellent 2 year warranty (as long as you purchase them through an approved dealer). I own a lot of Sennheiser headphones, from the high end HD800 and IE800s right down to the CX680s which were used daily for exercise. These have an in-line volume control which is integrated into the cable, my CX680s were a two part design with the volume control on the second cable section - this offered some flexibility in how it was attached but also caused a weakness as it was usually this part of the headphones which would fail. Sennheiser has done away with this design (which was essentially a variable resistor) and has incorporated the same volume control/ play and pause design that is compatible with Apple products, unfortunately this means the volume control is not universally compatible so if you have an Android device it may or may not work. I was planning to use these with an old (but very rugged) Zune HD and this does not work at all even though the simpler volume control on the CX680 did.

Although these appear to be more robust and lighter than the CX680 as part of its improvements, the biggest flaw is the over-ear rubberised clips. Lots of people have complained about how tinny the sound is from these headphones, well they are not tinny at all, in fact they produce very good sound indeed but they do need to be properly inserted in the ear, with a tight seal to get a full range of the headphones, this is what all ear-canal headphones require.
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Colour Name: Black Verified Purchase
I've been searching for good quality headphones for gym and running. These Sennheiser headphones give good music quality, but at least in my ears the headphones won't stay in. Just a little bit of motion will make the plugs to pop out and the music quality drops dramatically. Apart from that the overall quality is very good, but the fit just isn't too good.
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Colour Name: White / Blue Verified Purchase
These really are great headphones. I'm no expert and won't pretend to know about bass or sound quality but I wanted a set of headphones for the gym that wouldn't fall off when I run and that's what I got in these. To me they sound great and I'm told they aren't noisy to others either which is important in public spaces. The controls aren't compatible with my android phone which is annoying but was mentioned in the description so I can't knock a star off for that. The cable is a decent length and they come in a little carry bag so they don't get tangled up with other stuff in my gym bag. I think they look really stylish and the over ear style means they stay put. They are even comfy to wear with my tragus piercing which I haven't found with any other headphones other than big can style ones which aren't great for a sweaty session in the gym. So if you are just an average jo that likes your music then I think these are a great buy.
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Colour Name: White / Blue Verified Purchase
I'm a Music Technologist with ears which don't seem to be compatible with many of the in-ear earphones these days! So I was hunting around for something which would give me a little extra support for everyday listening. I don't use these for sport. Instead I use a set of bluetooth earphones, which generally work very well indeed and stop you getting tangled up.

Overall, the sound quality is fine. They lack on bass. Bass is improved by making sure that you have a snug fit (You have 3 sizes of buds supplied, and you should choose the snuggest fit for your ears). Mid and high range sounds have some nice definition to them. I've also tried them for making calls from my iPhone and have had no problems whatsoever.

The mechanism seems solid and being water resistant, it doesn't matter if you're caught in the rain. The control has a nice positive feel to it and seems to be well made.

In conclusion, if you're bass obsessed, these aren't the earphones for you. If you want something for everyday listening, which won't break the bank, then these are probably as good as any in this price range.
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