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Sennheiser PX 685i - White

Lightweight Adidas Sports Series Earphones/Earbuds with Integrated iPhone/iPod Remote & Microphone

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An Oldie, But a Goodie!

When you look around, technology has managed to work its way into just about every single persons life. Not that it is a bad thing, its one of the outcomes of people striving to achieve more. Sennheiser is a company founded off of that very concept. Time and time again, Sennheiser went out and achieved more. Changed the way people see many things, new or even very common. The PX 685i is not a brand new idea, just a brand new direction on a very popular concept. The idea of a lightweight "Headband" (not neckband, very common mistake) Headphone was a very popular thing when portable audio became possible. Mainly paired with their corresponding AM/FM radio, CD player, etc., they were built for people who want to be able to listen to their music, while minimizing their potential restrictions. A walk, run, or jog isn't quite as enjoyable when your ear is sweating more than the rest of your body. Lets face it, it just flat out feels awkward. Sennheiser took this concept, and went all in. Better than ever, this oldie is the newest goodie.

Serious Sports & Audio Fans Only!

If you have ever been a fan of sports, outdoor activities, going to the gym, or even Physical Education (P.E.) class, then chances are you are familiar with a little brand called Adidas. Chances are, 2 of the 3 people closest to you during these activities are currently sporting the brand. The main reason is Adidas is sort of the unofficial sporting goods leader. Since the beginning of time, Adidas (from Adolf or "ADI" Dassler or "DAS" the founder, ADI-DAS) has been supporting athletes and providing them with better, more effective sporting equipment. It should come as no surprise to see Sennheiser partner with a sporting goods world leader when they went after one of the most popular ideas ever. Sennheiser and Adidas were going to partner to manufacture the best all around headphones and best earbuds for athletes, sports usage, and gym goers. The result of this brilliant partnership, perfection. Headphones and Earbuds that can endure the torment that athletes will put them through. Headphones & Earbuds that can be washed, and rinsed clean after hours of dripping sweat, through incredibly humid weather. Durable & flexible building materials made to adjust and perform in the toughest environments. Adidas was not the only providing benefits here, because anyone who has ever owned a pair of Sennheiser headphones knows exactly how serious they take their sound. As always, premium audiophile grade acoustics we used in every single model. The PX 685i Headphones feature open acoustics within their in-ear design. This allows users to hear outside noise without the need to remove their headphones. Runners can rest assured, the open acoustics provide outside sound waves with a nice entrance to help make listeners aware of any sounds that may require your attention, or reaction. The icing on the cake is the built-in remote control and microphone. Nothing is worse than stopping your exercise to pull your phone out of your pocket to answer a phone call, or change the track to something a little more motivating. Now, clearing the call (or answering if you really want to) on your iPhone, or changing the track on your iPod is as simple as pressing a button on your remote. Don't ever forget, good things come to those who wait. But wait no longer, because dreams have come true.

What's In The Box?
  1. Sennheiser PX 685i Earphones (White)
  2. Ear-Tip Adapters (S/M/L)
  3. Air Cushion Adapters
  4. Storage Pouch
  5. Cable Clip
  6. Owners Manual
  7. Authorized 2-Year Warranty

General Features:

  • In-Ear Headband Adidas Active Sport Earphones/Earbuds
  • Integrated smart remote and microphone for enhanced usability and convenience of iPod/iPhone/Smartphone Phone Calls, and music listening
  • Let Siri do all the work with new "Siri Enabled" in-line microphone
  • Ergonomic headband for secure and comfort fit during workouts
  • High output drivers for impressive low end response
  • Para-aramid reinforced cable for superior strength and reliability
  • Acoustically tuned to deliver crystal clear sound at all volume levels
  • Ideal for use with all MP3, iPad, iPod, iPhone
  • Tangle-free cable for convenient listening
  • Designed with a snug fit for active people
  • Sweat and water resistant ensures reliable playback during the toughest, hottest, sweatiest environments
  • Gold-plated, corrosion-resistant stereo jack
  • Various ear adapter sets for maximum comfort
  • Main Color: White
  • Additional Color Tone: Silver & Blue
  • Manufacturer Part Number: 504982
  • Also Found As: Sennheiser PX-685i White, PX685i White, PX-685i/W, PX685i/White
  • Also Available In: Black
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Product Specifications:

  • Headphone Design: In-Ear (Inner-Ear Canal)
  • Headphone Fit: Headband
  • Driver Design: Dynamic Speaker
  • Frequency Response: 18-20,000 Hz
  • Sound Pressure Level (SPL): 120 dB
  • Total Harmonic Distortion (THD): <0.5%
  • Nominal Impedance: 16 Ohms
  • Pick-up pattern: Omni-directional
  • Connection: Angled 3.5mm (1/8 Mini Jack)
  • In-Line Remote & Microphone: Compatible with Apple iPod, iPhone, & iPad
  • Cable Length: 3.96 Feet (1.2 Meters, Symmetrical)
  • Special Feature: Sweat-Proof, Perspiration-Proof, & Water Resistant (Can be Rinsed Clean)

Headphone Design

Headphone Type

Headphone type refers to the construction of the headphones.

Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.

Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.

Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.

Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.

Earpiece Design

This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.

In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.

Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.

On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.

Specifically For
Some headphones can use an IR Transmitter in your vehicle, while some can be plugged into your media device and be used on the go or at home.

This is the lifestyle that the headphones are designed for. Each style has unique features that make it perfect for particular people.

Designed for those that are active. These headphones are made to stay in the ear during workouts. Whether you frequent the gym a lot or go running outside in the fresh air, these active style headphones will be your best friend.

For those that need the best in music quality. These audiophile headphones are engineered to produce high fidelity and accurate audio replication.

Disc Jockeys (DJs) require a special type of headphone that can meet their professional needs. These headphones are durable, loud, and will often allow for one ear listening.

Fashion Enthusiast:
For those that want to make a fashion statement with their headphones. Not only are these headphones designed with great sound quality in mind, but also great looks!

This lifestyle speaks for itself! If you love video games and want a pair of headphones that will deliver explosive sound and allow you to communicate with others, this is where you need to shop!

Music Lover:
These headphones are made to sound great. They are designed to produce rich, brilliant sounds that will play your music in a manner that the artists would appreciate. These headphones are for those that love music.

Musical Production / Recording Artists:
You're a music creator. Whether you're producing and mixing it down or in the studio recording yourself, you need a pair of headphones that will reproduce the music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Headphones need to be affordable and durable to keep up with the student lifestyle. A variety of styles can be considered a pair of student headphones.

Those that often find themselves on planes or on the road a lot. These headphones are compact, lightweight, and have a portable design. Some of the headphones in this lifestyle will feature noise cancellation technology that will help shut out outside noise.

Fashion Enthusiast
Music Lover

General Features

Noise Reduction technology removes unwanted noise from a signal. Background or ambient noise can be removed to produce clearer speech and enhanced hearing. Typically these Active Noise Canceling (ANC) headphones are powered and use batteries to activate the noise canceling technology. Also referred to as Noise Reduction or Noise Cancellation.
Headphone Connection
This is how the headphones connect to the audio source.

Corded means that the headphones use a cord to transfer the audio signal.

Wireless means that the audio signal is transmitted wirelessly to the headphones.

1/4" Stereo Jack Adapter
Some headphones will come with a 1/4" stereo jack adapter to connect the usual 3.5mm jack to a 1/4" stereo plug.

1/4" Stereo jack is a larger audio jack that select electronics have.

Volume Adjustment
Volume Adjustment means that the headphone (independent of the source) can adjust the playback volume. Many headphones and ear buds have in-line volume control, which allows adjusting the audible volume from a switch on the headphones cord. Other headphones have a volume knob on the headphone can.
Built-In Microphone
This means that the headphones or earbuds have a built-in microphone. This can be a microphone on the cord, built into the headphone, or even a boom microphone. These mics can be used for music devices like iPods, for Smartphones to make and receive calls, or for gaming purposes.
Driver Type
The physical design of the driver in the headphones.
The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.
16 ohms

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider

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Product Summary


Model Number

PX 685i White





Internal SKU


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sennheiser PX 685i - White