MOS Spring, AUX 3.5mm Cable

SKU SW-30442-03

Most 3.5mm AUX audio cables have two things in common: they don’t last long and they are ugly. Many people have experienced an auxiliary cable going bad and only playing music out of one speaker, if at all.

"MOS Spring cables are reinforced six ways from Sunday."

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MOS Spring Warranty

The MOS Spring takes the humble 3.5mm cable to a whole new level of design and quality. The spring features only the best materials to ensure this would be the only 3.5mm cable you will ever need to buy. We’re so sure of this that we are offering a lifetime warranty on every MOS Spring AUX cable we sell.


MOS Spring Features

Anodized aluminum heads not only give added protection to the conductor, it also gives the Spring a classy, high-quality look and feel.

Metal spring strain relief protects the most vulnerable part of the cable. It also ensures the cable will work great with the MOS and the MOS Menos.

The Heavy Duty Braided Cable keeps the conductor protected from any abuse.

If your MOS Spring AUX cable fails for any reason, just send it back and we'll give you a new one, no questions asked.

The MOS Spring AUX cable comes in three different color choices to match your personality.

MOS Spring Color Options



Mfg. Part Number

  • SW-30442-03 3 ft. Black
  • SW-30442-06 6 ft. Black
  • SW-30449-03 3 ft. Red
  • SW-30449-06 6 ft. Red 
  • SW-30450-03 3 ft. Teal
  • SW-30450-06 6 ft. Teal


  • MOS™ by Sewell

Customer Reviews

Based on 14 reviews
Part Number: SW-30450-06
Best value for the money

Pros: Returns when you need them are a breeze. Spring ends keep everything from damage Great quality cable. If it’s damaged and you return it once you basically paid for the cable. That took four years. Cons: No TPE exoskeleton as an optionOther: I miss the gee-whiz of the contrasting spring colors from the kickstarter.

Part Number: SW-30442-06

Pros: QualityCons: Not freeOther: I buy their usb cables so I figured I'd give these a try. Zero complaints!

Part Number: SW-30450-06
So good!

Pros: So far, pretty durable. I've only had it for about a month but i honestly love it. It's super skinny and durable and I like that it has the spring on the ends of it to protect it from the normal wear and tear that happens with cords.Cons: Other:

Part Number: SW-30450-03
Great Service

Pros: Great Service Lifetime warranty Cons: Broke after about 2 months of daily use. Other: I contacted the live chat and had the aux cable easily replaced. It took about 5 minutes for them to send me a new order.

Part Number: SW-30450-03
nailed it.

Pros: it works! ha. but seriously, its simple & straight to the point. also, particularly liked that in fit with different phone case-houses. Cons: the color varied slightly from the image (in my opinion.) but it wasn't anything to dislike or be upset about.Other: thanks, Swell. you guys are doing great things. keep up the good work!

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