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Item#: 9SIA2CP2N09882

Sennheiser OCX 685i Sport In-Ear Headphones (White)

  • Maximum ruggedness and durability – Sweat and water-resistant
  • Excellent connectivity
  • Superior strength and reliability
  • Customized fit - Ergonomic earhooks for optimal secure fit
  • Premium comfort

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews



Sennheiser OCX 685i Sport In-Ear
Headphones (White)

Get full, rich music and clear, hands-free calls even during your strenuous workouts.
This ultra-lightweight headset features adjustable ear clips and a built-in smart remote.


Spend more time on your workout with the OCX 685i SPORTS headset. The comfortable, self-adjustable earclips are lightning quick to put on. They stay secure to your ears, so you won't have to worry about them falling out when you're on the treadmill. The ear-canal coupling attenuates well. The cable routing minimizes structure-borne noise, so you can enjoy your music to keep you motivated.


The headphones are sweat- and water-resistant. They block just the right amount of outside noise, so you'll always be aware of your immediate environment

The ergonomic neckband provides a secure and comfortable fit during workouts.

The integrated smart remote and microphone offer enhanced usability and convenience.

Ideal for use with all MP3, iPad, iPod, iPhone, miCoach, CD players, mobile phones (3.5mm) and AV systems installed in gyms. Two-year warranty.

  • Maximum Ruggedness and Durability
  • Customized Fit
  • Ease of Use
  • Excellent Connectivity


Impedance 16O
Frequency Response - Headphones 18Hz - 20000Hz
Frequency Response - Microphone 100Hz - 10000Hz
Sound Pressure Level (SPL) 120dB
THD - total Harmonic Distortion < 0.5%
Jack 3.5mm angled
Cable Length 1.2m single-sided cable
Pick-Up Pattern Omni-directional
Sensitivity as per 121 TR 9-5 -44dB V/Pa


Learn more about the Sennheiser Electronic corp. OCX685IW


Sennheiser Electronic corp.


In-Ear Headphones
Warranty, Returns, And Additional Information

Customer Reviews of the Sennheiser Electronic corp. OCX685IW

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  • Jason C.
  • 1/8/2014 8:38:22 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsOnly for Iphone

Pros: Sound Quality:
I own several Sennheiser headphones, and have never been displeased. They are my go-to for great quality sound. And these headphones are no slouch in the sound department, but they are not noticeably better than my other exercise phones (which cost about $30). This makes me question the price point. When I bought my HD280's (which aren't even top of the line) I immediately saw the difference over $30-60 headphones. Not so much here, though part of this is probably due to the lower source quality coming from a smartphone (S4).

Nevertheless, the headset does have crisp sound with a solid bass reproduction.

Cons: Functionality:
The primary problem with these headsets is that they are NOT "IDEAL for use with all MP3, iPad, iPod, iPhone, miCoach, CD players, mobile phones (3.5mm) and AV systems installed in gyms" as the product page claims. The inline mic and remote only function on apple products. This is fine, just don't claim that the product is ideal for use in smartphones. I know it is hard to find a remote that works with android, and one of the reasons I bought this set was the fact that A) nowhere does it say that the remote ONLY functions with Iphone and B) the page says these are IDEAL for those settings. If you have an apple product, these SHOULD work well. This con is mainly about poor product description.

Despite being adjustable, the earphones are rather large even at their smallest point. These were a gift for my wife who is rather petite. The ear wraps didn't fit her ears very well, and left a lot of room for movement. They fit my ears just right at the smallest setting. Would not recommend for young people or people with small ears.

Other Thoughts: Would probably rate at 4 eggs if only considering apple products. Would rate at 2 if only considering smartphone/mp3 players.

Returned the product for one that functions with android.

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  • Roberto N.
  • 9/27/2013 12:53:01 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat sound!

Pros: Great sound with great bass, excellent build and the white matches with the white i gear. Fit is very unique to each person but they seem to fit great and they stay on the ear during workouts.

Cons: A bit pricey but you get what you pay for.

Other Thoughts: With headphones I tend to focus on what they are intended to do. In this case, these are for working out and so there will be sacrifices in order to make them sweatproof, water resistant, etc. The sacrifice is a smidgen of decrease of the quality of sound when compared to non sports headphones of the same price. However, this once again is to be expected. I am willing to take this sacrifice knowing that they are built for workouts and sweat inducing activities. When I am done, then I switch to my other headphones (Grado) and get the better quality sound I yearn for. I guess my analogy is like having a 2 door sports car for when I want to go fast, and having an SUV when I want to haul a boat or go get groceries, etc. (each one has an ideal function, both take you from point a to b). Ultimately I think these are as good as it gets in sound when it comes to sports headphones and that is saying a lot. Having tried various but not all, I do like these Sennheisers for what they offer, great sound in a sports package.

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