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Item#: 0TH-0036-00058

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

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  • 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
  • Warranty & Returns
  • Reviews


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

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 - 10000 Hz
Sound Pressure Lveel (SPL) 120dB
THD - Total Harmonic Distortion < 0.5%
Jack 3.5mm angled
Cable Length 4ft (1.2m) single-sided cable
PICK-UP PATTERN Omni-directional
Sensitivity as per 121 TR 9-5 -44dB V/Pa


Warranty, Returns, And Additional Information

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  • William N.
  • 5/10/2014 10:39:23 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsThey grew on me

Pros: Stay in your ear while running. Sound quality is as good as you can expect for moderately priced earbuds. Relatively flat sound (that's a good thing). Can wear for long periods.

Cons: Goofy volume / pause buttons. Not terrible, but not really worth using either.

Other Thoughts: Claims all kinds of compatibility with Apple devices, but works fine on android.

Everyone's needs are different, but the cord length is perfect for me. I run it through my shirt. If running, the phone is in my hand. Otherwise, in my pocket.

It would be nice if the ear hooks came in different sizes, but the reality is, they do their job and keep the earbuds where they belong while exercising.

I've a pair of Sennheiser HD 485's that I love. No earbuds will sounds as good, but these earbuds are much better than I expected.

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