Seatosea S9 Long Cord Earplug Headphones: High-Quality Sound on a Budget

Published on June 21, 2023, 7:38 p.m.

If you’re looking for great sounding wired earbuds on a budget, the Long s9 Cord Earplug Headphones deserve a close look. Priced at just under $20, these earphones from seatosea aim to deliver premium sound quality without breaking the bank. Let’s dive into the details in this hands-on review.


Sporting a 5ft cable, the white Seatosea S9 Long Cord Earplug Headphones connect via a standard 3.5mm jack and are compatible with most smartphones, tablets, laptops and devices with a headphone port. The TPE cable and metal earbuds give these earphones a durable yet stylish look and feel.
 Seatosea S9 Long Cord Earplug Headphones

Key Features

  • Excellent audio clarity with clear treble and powerful bass
  • Passive noise isolation blocks ambient sounds
  • Tangle-free magnetic earbuds with ergonomic design
  • Durable TPE cable and metal earbud housing
  • Universal 3.5mm connector for all devices
  • 5ft cord length gives freedom of movement

 Seatosea S9 Long Cord Earplug Headphones

Comfort and Design

The angled earbuds are ergonomically shaped to fit comfortably in the ear canal. Three different sized eartips are included to get a secure personalized fit. The TPE coated wires are lightweight and flexible. A magnetic clip on the earbuds keeps them tangle-free when not in use.
 Seatosea S9 Long Cord Earplug Headphones

Ease of Use

With no batteries or complex controls, the Seatosea S9 Long Cord Earplug Headphones are very easy to use. Simply plug the 3.5mm jack into a compatible device, choose the eartip size for a good fit, twist into the ear, and start listening. The universal connector works seamlessly with most equipment.

Sound Quality

The 10mm drivers deliver excellent audio clarity with clear treble and thumping bass. The sound is well-balanced across low, mid and high frequencies to restore the authentic sound. Vocals come through crisp and instrumentation is easily distinguished. For the price, the dynamic sound is very impressive.

Noise Cancellation

While not actively powered, the in-ear design provides effective passive noise isolation. By sealing in sound, ambient noise from the surroundings is significantly reduced. This allows you to immerse in your audio without cranking up the volume to drown out external distractions.
 Seatosea S9 Long Cord Earplug Headphones


With a 5ft cord, the Seatosea S9 Long Cord Earplug Headphones provide ample length to move freely while listening. The standard 3.5mm plug offers universal compatibility with smartphones, tablets, computers, TVs, MP3 players and any device with a headphone jack. No batteries or charging required.

 Seatosea S9 Long Cord Earplug Headphones

Use Cases

The Seatosea S9 Long Cord Earplug Headphones are great for everyday use at home, work or on the go. The lengthy cord makes them ideal for listening during workouts, walking, cleaning and other physical activities. The crisp sound and noise isolation provide an immersive experience for enjoying music, podcasts, calls and more in noisy environments.

User Feedback Analysis

Reviews for the Seatosea S9 Long Cord Earplug Headphones paint a positive picture overall. Out of 70 global ratings, the majority of users give 4 or 5 stars. Looking deeper into the specific reviews reveals plenty of happy customers praising these budget-friendly earbuds.

When it comes to sound quality, many users are blown away by the crystal clear highs, robust bass, and well-balanced audio reproduction - especially considering the low price tag. According to one reviewer, the Seatosea S9 Long Cord Earplug Headphones allows you to “hear each instrument clearly” as if you are right there with the band. Several mention the “thumping low end” that makes listening to hip hop and EDM a blast. For those who want dynamic sound without breaking the bank, these earbuds check all the boxes.

In terms of comfort, the ergonomic angled design receives kudos for its ability to fit snugly in the ear without fatigue. One customer describes wearing the Seatosea S9 Long Cord Earplug Headphones for hours on end without any soreness or irritation. Those with sensitive ears say the soft silicone tips feel gentle and comfortable compared to cheaper plastic models. The lightweight construction and flexible TPE coated wires move freely without tugging.

When it comes to noise isolation, the in-ear seal does an admirable job at blocking external distractions according to reviews. Whether it’s the roar of airplane engines, nearby construction, or a crowded subway car, the Seatosea S9 Long Cord Earplug Headphones allow you to immerse in your own private world. One commuter relies on them to find “solace during my hectic commute”. For the price, they deliver impressive passive noise cancellation.

On the critical side, some find the long cord unwieldy and obtrusive. One user trips over the extra wire length getting in and out of the car. Others wish for a clip or winder to manage the slack. Also, in rare cases, the earbuds can fall out if not properly twisted into place. Using the different sized eartips helps achieve a more secure fit.

On the whole, audiophiles looking for great wired sound without breaking the bank will be thrilled with the Seatosea S9 Long Cord Earplug Headphones. As one delighted customer exclaims, “an unbelievable value for the money - it feels like I robbed the bank!” For impressive audio performance at an affordable price, these earbuds deliver in spades.


  • Superb sound quality given the budget price
  • Effective passive noise cancellation
  • Durable construction with tangle-resistant design
  • Universal device compatibility
  • Excellent value for money


  • Extra long cord may be cumbersome
  • Earbuds can occasionally fall out for some


For under $20, the audio performance and features of the Seatosea S9 Long Cord Earplug Headphones are truly remarkable. The dynamic sound rivals earbuds double the price. If you want great sounding earphones without spending a lot, these should be at the top of your list!


Overall, the Seatosea S9 Long Cord Earplug Headphones provide excellent wired sound quality on a budget. With dynamic audio, passive noise cancellation and a comfortable design, seatosea hits the mark for affordable yet high performing earbuds. Looking for great value earphones? The Seatosea S9 Long Cord Earplug Headphones are easy to recommend.


  • Brand: seatosea
  • Model: language_tag
  • Connector: 3.5mm
  • Cord Length: 5ft
  • Driver Size: 10mm
  • Eartip Sizes: S/M/L
  • Weight: 1.23 oz
  • Warranty: unknown

What’s in the box

The Long s9 Earplug Headphones include:
- Earbuds with 5ft cord
- 3 sizes of eartips (S/M/L)
- Cable clip
- User manual


Using the Long s9 Earplug Headphones is very easy:

  1. Select the eartip size that fits most comfortably in your ears.
  2. Insert the earbuds and twist slightly to get a secure fit.
  3. Connect the 3.5mm plug to your smartphone, tablet, computer or device.
  4. Manage the cord length by clipping excess wire to your clothes.
  5. Adjust volume and enjoy dynamic sound with noise isolation!
Seatosea S9 Long Cord Earplug Headphones