Kingstar K400

Last Amazon price update was: May 20, 2024 23:02
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Kingstar K400 Price History


Current Price $30.00 May 20, 2024
Highest Price $30.00 May 19, 2024
Lowest Price $30.00 May 19, 2024
Since May 19, 2024

Last price changes

$30.00 May 19, 2024

Kingstar K400 Description

Kingstar Wireless Earbuds for Uninterrupted Mobility and Comfort

Kingstar wireless earbuds are an ideal choice for those looking for a convenient listening experience. With its Bluetooth connectivity and lightweight design, these earbuds provide superior sound quality with minimal interruption. Featuring long-lasting battery life and ergonomic fit for an exceptional sound, these earbuds are perfect for superior sound on-the-go.

Get Ready to Listen Anywhere With KingStar Wireless Earbuds

The KingStar Wireless Earbuds are designed for easy listening on the go. This handy pair of earbuds features Bluetooth 5.0 technology, allowing you to easily sync with compatible devices and speakers for instant wireless sound. With their seamless device pairing and intuitive controls, the KingStar Wireless Earbuds make it easier than ever to listen to your favorite tunes and podcasts. Plus, their lightweight design ensures comfort in any situation.

Long-Lasting Wireless Playtime, or Plug-In and Go

These KingStar Wireless earbuds don’t only provide you with wireless convenience when listening on-the-go, they also provide you with long lasting battery life. With an industry leading 35 hours of charge, these earbuds can provide you with multiple days of enjoyment without the need of charging. When you’re running low on battery life, the KingStar Wireless Earbuds come with a USB-C charging cable allowing you to quickly and smoothly recharge the earbuds in no time.

Premium Durable Design and Enhanced Comfort

The KingStar Wireless Earbuds are designed to provide the user with the ultimate listening experience. Each earbud is constructed with a matte-black finish, adding an air of elegance and sophistication that will put you in the listening zone. The ear tips include a specially designed nozzle and a removable silicone sleeve allowing greater adjustability and blocking out of external noises. The revolutionary design ensures a perfect fit for any ear shape.

Superior Sound and Exceptional Care For Overear Comfort

Experience incredible highs and booming lows with high resolution sound technology that supports various bit-rates, and crystal-clear transmission for an uninterrupted experience. These wireless earbuds also include a number of other features, such as call alerts, and voice controls that allow you to easily accept a call, hang up, or pause a song, at the touch of a button.

Noise Canceling Technology For Immersive Listening

Listen to your music with the utmost clarity and total privacy with the noise canceling technology included in the KingStar Wireless Earbuds. Two noise canceling microphones make sure no external sound reaches your ears for the purest immersion possible.

Waterproof Design for Any Environment

The KingStar Wireless Earbuds are IPX-5 waterproof certified, making them perfect for use in any environment without fear of damage. Whether you’re at the beach, swimming pool, or in the rain, these earbuds are guaranteed to hold up.

In-Ear Detection and Automated Power Modes For Easy Control

The KingStar Wireless Earbuds have the latest in-ear detection technology to make listening easier than ever. As soon as you put them in your ears, the earbuds automatically connect over Bluetooth, allowing you to be immersed in sound faster than ever. They also come with a range of automated power modes to make sure you’re always using as little battery as possible.

Multi-Functional Button And Volume Controls Right on Your KingStar Earbuds

Manage your music and answer calls right from the KingStar Wireless Earbuds. A multi-functional button allows you to play/pause songs, answer/end calls, and even activate a personal voice assistant. Volume controls on the side of the earbuds allow you to seamlessly adjust the sound output to your preferred level.

Considerably Affordable Price and A Variety of Color Options

Considering all the features the KingStar Wireless Earbuds offer, it’s no wonder they come at a remarkably affordable price. You can choose from a variety of colors that suit your style, such as black, white, blue, and even pink.

Ultimate Convenience With KingStar Wireless Earbuds

The KingStar Wireless Earbuds Bluetooth Headphones are the perfect choice for those looking for a seamless listening experience on-the-go. With its lightweight design, ergonomic fit, long-lasting battery life, noise canceling technology, and waterproof design, these earbuds ensure a smooth listening experience anywhere. Choose them for superior sound and ultimate convenience.

Product Features:

  • Bluetooth 5.0 technology for effortless connection
  • Long-lasting battery life with an industry leading 35 hours of charge
  • Matte-black finish for an elegant look
  • Ergonomic noise isolation with adjustable ear tips
  • High resolution sound technology for studio-level quality
  • Engineered for superior sound performance with low distortion
  • 2-microphone noise canceling technology for depth of sound
  • In-ear detection for easy connecting
  • IPX-5 waterproof certification for easy use in any setting
  • Multi-functional button and volume controls
  • A variety of colors to choose from
  • Affordably priced

FAQs on Kingstar Wireless Earbuds

  • What connection technology do the Kingstar Wireless Earbuds use?

    The Kingstar Wireless Earbuds use the latest Bluetooth 5.0 technology, allowing for easy and seamless connection to compatible devices.

  • What is the battery life of the Kingstar Wireless Earbuds?

    The Kingstar Wireless Earbuds have an industry leading 35 hours of charge.

  • Are the Kingstar Wireless Earbuds waterproof?

    Yes, the Kingstar Wireless Earbuds come with IPX-5 waterproof certification, making them suitable for use in any environment.

  • How do I adjust the volume of the Kingstar Wireless Earbuds?

    The Kingstar Wireless Earbuds come with easy-to-use volume controls located right on the earbuds, allowing for easy and quick adjustment.

  • Are the Kingstar Wireless Earbuds comfortable to wear?

    Yes, the Kingstar Wireless Earbuds are designed for superior comfort with its lightweight design and adjustable ear tips.

  • What colors are available for the Kingstar Wireless Earbuds?

    The Kingstar Wireless Earbuds are available in various colors, including black, white, blue, and even pink.

Kingstar K400 Specification

Product Dimensions

1.26 x 0.59 x 0.59 inches

Item Weight

5 Grams

Item model number


Is Discontinued By Manufacturer


Date First Available

November 11, 2021




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Kingstar K400 Videos

Kingstar K400 Reviews (8)

8 reviews

3.6 out of 5
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  1. Mia Tesla Marinkovic

    Worked great for awhile then one stopped working, get what you pay for but worked great while they lasted

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  2. Placeholder

    Work great for video visits not great at all if you want to use them to talk on the phone the other party will not be able to hear you

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  3. TJ

    I had an issue when I received my earbuds, as the case would not charge even with new cables, blocks, and trying different outlets. The seller reached out to offer sending a new pair so the company would have another chance of me loving their product. With their care filled note, I now believe that my set was a manufacturing error and not a reflection of the sellers product. Before the charge ran out on my set, the ear buds were a wonderful fit, comfortable, and easy to use. The sound was clear with quality. I also had to turn down the volume on my phone. These buds do reach high db levels which I am sure will cut through working in high noise jobs or just drown out any annoying environment.

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  4. Sarah Dearborn

    The Good:
    These earbuds sound amazzzzing. I could not believe the sound quality! This statement is coming from a audiophile who is used to headphones jacked into a DAC

    The Bad.
    1. One earbud will lose its ability to hold a charge. I have purchased 2 pairs of these earbuds and both right earbuds will not hold a charge after a month (see pic). I tried so many variations of charging with no luck.
    2. These things are strangely fragile. I only use these earbuds for running. Both purchased pairs come apart after a while. At first you can just pop them back in but after a while that just doesn’t work (see pic)
    3. Customer service is non existent. They send you a literal post card offering to refund you a portion of your purpose for a good review (which I really wanted to give!). But they do not respond to any emails for assistance with their product.

    I really loved the sound on these little guys. Very clear and well balanced. HIFI for real. Unfortunately these buds just fell apart on me after a month after very little use. My biggest grip was the right earbud refusing to hold a charge after a while. I bought a second pair because I thought “I” had broken them some how. After my second pair I encountered the same issue again, including the earbud detaching apart. This is sad. I really loved the price, the waterproof ability and the super clear sound.

    But I cannot in good faith recommend these anymore. I’m even going so far as to leave a review. Something I never bother doing!

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  5. Amazon Customer

    Love how easy it is to keep charged with the storage case. Fits ear great, probably the most stable ear piece I have ever used.

    Not sure of battery life because I have just used them in the pool for the first time. But since the storage box charges them repeatedly it will be so much better and easier than any pair have had! Plus charges with the same cable as my phone.

    Sound quality was great, paired easily with my phone. Super happy about this purchase as all the “waterproof” earbuds I have purchased before were not. Having something that is submersible is great!! Thanks for such an excellent product!!!

    Oh, and shipping was super fast without prime and seller was very quick and helpful with communication!

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  6. Martina

    I like the ability to listen to books when floating in the pool which was my main reason for buying. Music is just okay. My non-waterproof buds are JBL so I’m spoiled—very little bass on these K400’s, so sound is more unidimensional than I’d like. Major fail for phone calls but perfect sound when recording on Marco Polo messages so I’m confused why it works for that and not calls, unless my phone converts to its speaker when the app is engaged, not sure. My neighborhood pool is average size, not olympic, and the sound breaks up if I float to opposite side of my pool bag, where I prefer to leave the phone to protect from heat and splashes. But, you get what you pay for, right? I will replace with higher quality if I can find for swimming, and hand these off to the husband. I want the over-ear feature so wires don’t drag in the water. Hoping I find some JBL’s that specifically include swimming. I don’t want to accidentally submerge and ruin them.

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  7. Bobby J.

    I got these for my aunt, now she’s not technical savvy at all so she unpacked them and was charging all night so one ear pod work so she was telling me to send them back, so I took them and tried it out for myself 🤦🏾‍♀️ She left the plastic on the bottom of the ear-pod so they wasn’t getting no charge so I charged them , they came on both, connection was good and easy, nice and loud I had them two day for my self very worth the money, now my aunt happy she didn’t return them cause she love them. When Some time you gotta make sure u not the problem you could miss out on a good product cause you not sure what to do lol ask my aunt. Great job kingstar

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  8. TJ

    Pros: Sounds is really good. They stay in my ears when I’m running. Price is fair.

    Cons: Right earbud stopped holding a charge about 8 months after use. Not good. I’ve tried cleaning them really well and the charging box, nothing works. Other bud, no issue. Real bummer.
    I do struggle wearing my sunglasses with these as well. They both press around ears, slightly uncomfortable.
    I wouldn’t buy these again. This is my second pair of under $40 ear buds and I’ve run into the same issue…will not hold a charge. User issue? Maybe, maybe not. I think I’ll try spending more money on a better pair.

    Uodate: user error. I’ve recently figured out that by really wiping off and wiggling the ear buds down into the charger has solved my problem…thus far. I leave them to charge overnight too. So far so good lately, no issues with the one ear bud going out on me mid run. Still have to adjust sunglasses periodically when wearing them though.

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