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LAICOMEIN

Bluetooth Receiver, LAICOMEIN Portable 3.5mm Aux Car Adapter, Bluetooth Wireless Audio Receiver for Car/Home Stereo/Wired Headphones/Speaker, 16H Battery Life

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 11
Order within 58 minutes
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Features

  • BLUETOOTH AUX RECEIVER FOR CARThe Bluetooth 3.5mm Aux receiver can turn your old car audio/home audio/3.5mm wired earphones/speakers into wireless. Compatible with most Bluetooth-enabled devices, such as smart phones, tablets, laptops, and computers.
  • ENJOY HANDS-FREE CALL & WIRELESS MUSICThis Bluetooth AUX receiver can pair with Bluetooth devices and the built-in microphone can be used to answer hands-free calls. One key to answer, reject, end and redial the last number. Designed with MFB and volume up/down button, it is very convenient to adjust the volume of music.
  • BLUETOOTH 5.3 & DUAL CONNECTIONThe Bluetooth receiver equipped with Bluetooth 5.3 to ensure stable connection. It can connect 2 devices at the same time, so you won't miss any calls while listening to music. The Bluetooth range up to 33ft without obstacles. Automatically connects to the last connected device.
  • FAST CHARGING & LONG BATTERY LIFEOne key to power on and enter pairing mode. The built-in battery has a long battery life and can support up to 16 hours of use after full charged. Fast charging and can be fully charged within 2 hours.
  • PORTABLE&CONVENIENTWeights only 0.5 oz., very tiny size. You can take this Bluetooth audio receiver whenever you go. Very good companion for drivers. If you encounter any problems during use, please feel free to let us know and we will help you at any time.

Description

Bluetooth 5.3 – Low power, works with iOS/Android. Built-in mic for hands-free calls. Pair with phones, tablets, MP3s. Convert old car stereo, home stereo, or 3.5mm wired headphones to wireless. Longer Battery Life – 2hr fast charge, 16hrs use. Enjoy music & calls all day between charges. Perfect for long road trips – never a dull moment 1.Hold MFB 3s to power on – LED flashes red/blue (pairing mode) 2.Connect receiver's AUX to speaker/stereo via 3.5mm cable, or plug in wired earphones 3.On phone, turn on Bluetooth, search "J33" & connect. LED flashes blue every 5s 4.Play music or take calls Pair with 2 devices: Pair the 1st, turn off its Bluetooth to re-enter pairing mode, connect 2nd, then reconnect 1st from history – both connected Easy to Use – Universal 3.5mm audio jack works with most devices. MFB controls play/pause and answers calls with one click. +/- buttons adjust volume and skip tracks forward/backward

Special Feature: 3.5mm aux, Built-In Microphone, Fast Charging, Hands-Free Calls


Brand: LAICOMEIN


Connectivity Technology: Bluetooth


Power Source: Battery Powered


Material: Plastic


Additional Features: 3.5mm aux, Built-In Microphone, Fast Charging, Hands-Free Calls


Enclosure Material: Plastic


Color: Black


Supported Media Type: MP3


Installation Type: Plug In


Outer Material: Plastic


Power Source: Battery Powered


Voltage: 5 volts_of_direct_current


Number of Batteries: 1 CR5 batteries required. (included)


Compatible Devices: Bluetooth-enabled devices


Supported Standards: Bluetooth 5.3, L2CAP


Compatibility Options: Headphones, Smartphone, Speakers


Compatible with Vehicle Type: Car, Home


Supported Application: Bluetooth-enabled applications


Hardware Interface: Bluetooth, Bluetooth 5


Connector Type Used on Cable: Auxiliary


Number of Ports: 1


Audio Output Type: Headphone, Speaker


Audio Input: 3.5mm audio cable


Audio Output Mode: Stereo


Number of Channels: 2


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Data Link Protocol: IEEE 802.15.1/L2CAP


Item Dimensions L x W x H: 1.6"L x 1.6"W x 0.4"H


Item Weight: 14.2 g


Battery Weight: 1 g


Lithium Battery Weight: 0.05 g


Brand: LAICOMEIN


Model Name: J33


Unit Count: 1 Count


Manufacturer: LAICOMEIN


Warranty Description: 1 Year Warranty


Control Type: Audio Playback


Control Method: Touch


Human Interface Input: Unknown


Controller Type: Touch Control


Battery Charge Time: 1.5 hours


Number of Lithium-ion Cells: 1


Battery Type: Lithium-Ion


Lithium-Battery Energy Content: 1 watt-hours


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • ⭐⭐⭐⭐⭐ Excellent quality and very easy to use
Review Image by Camila Varona
Review Image by Camila Varona
Review Image by Camila Varona
Review Image by Camila Varona
⭐⭐⭐⭐⭐ Excellent quality and very easy to use I am very satisfied with this purchase. The Bluetooth receiver connected quickly to my phone, and the sound is clear with no interruptions. Setup was a breeze: I simply plugged it into my car's AUX input, and within seconds, I was listening to my favorite music. It also comes with all the necessary accessories for immediate use, and the battery life is impressive. It’s a great option for turning a car stereo with an AUX input into a Bluetooth system without spending a lot of money. I highly recommend it to anyone looking for a practical and affordable way to enjoy wireless music and calls in their vehicle. ... show more
Reviewed in the United States on August 2, 2026 by Camila Varona
    • Perfect for reviving an old stereo, absolutely wonderful!
Review Image by Sasha
Honestly, it exceeded my expectations. I bought it mainly to use in my car since my factory stereo doesn't have Bluetooth, and it has been the perfect solution. What I liked the most: ● Instant connection: It pairs super fast with my phone as soon as you turn it on. ● Sound quality: The audio is really clean, with no weird background noises or static. ● Practical design: The metal adapter it comes with is sturdy and stays firmly in place, though it also includes an extra cable if you prefer that. ● Convenient buttons: The center button is large and easy to press while driving to pause music or answer calls. ● The battery life holds up pretty well for daily commutes. If you have an older car or an old sound system at home with a 3.5mm aux input, don't even think twice it’s totally worth the price. Highly recommended! ... show more
Reviewed in the United States on August 1, 2026 by Sasha
    • Excellent
Review Image by Castro97
I like this Bluetooth adapter. It’s small, powerful, and very easy to use. It delivers exactly what it promises: I installed it in my car, and it connects quickly; the battery lasts a long time, and the hands-free microphone is a great bonus. A simple and effective solution
Reviewed in the United States on July 30, 2026 by Castro97
    • An Absolute Battery Beast—Perfect for Revitalizing Wired Home Speakers!
I primarily bought this LAICOMEIN Bluetooth receiver to make my old, beloved wired home speakers wireless, and it performs brilliantly. If you have an excellent sound system that only has a 3.5mm jack input, this adapter is a simple, cost-effective way to bring it into the modern era. The 16 hours of battery life is truly the standout feature. When using it at home, I can move the receiver around or keep my speakers connected for days without worrying about charging. It connects quickly to my phone and the audio quality is clear, with no noticeable loss of fidelity—it truly makes my old speakers Bluetooth compatible without any fuss. The controls (for volume and answering calls) are easy to use, and the portability means I can even use it with different sets of headphones if I choose. My only, minor complaint (and why it gets 4.5 instead of 5 stars) is that the charging cable is noticeably short. While this isn't a huge issue for an adapter that holds a charge so well, you'll definitely need a standard, longer USB cable if you want to charge it comfortably from a wall socket or a less-accessible USB port. Overall: If you want a reliable, rock-solid Bluetooth receiver to upgrade your existing wired home stereo or speakers, this is a fantastic choice. Highly recommended! ... show more
Reviewed in the United States on November 14, 2025 by krishnaveni r.
    • Easy to Use and Great Sound
Review Image by Maria S.
Review Image by Maria S.
Review Image by Maria S.
I'm very happy with this Bluetooth receiver. It paired quickly with my devices, and the sound quality is clear and stable. The setup was simple, and it works exactly as expected. The compact design makes it easy to carry and use anywhere. Overall, it offers great value for the price, and I would definitely buy it again. ... show more
Reviewed in the United States on July 27, 2026 by Maria S.
    • Works really well - even if you have to turn it on every time
Review Image by David Nathanson
Review Image by David Nathanson
I've been using this blue tooth adapter for several weeks now. For the price it is a great value! I sort of like my Jeep factory stereo, except it doesn't have BlueTooth. The car stereo does have an AUX IN port though, which this BT adapter plugs into. So far, I'm very happy with it. It works perfectly to send the sound from iPhone to the factory stereo. Perfect. No troubles at all. I have made & received a few of phone calls with it too. Phone call audio reports are not bad. Not super great either, sort of speakerphone sound- but acceptable & ok is what they told me. The mic is in the little unit, so I plan to hang it from the sun visor, closer to my mouth, like where a regular car phone mic would be. I expect that will improve the microphone performance. It came with a short male-male cable, and also a metal male-male adapter cable. You can use either one to connect, depending. Nice that it came with good options. The whole unit is small, less than 2 inches square. The internal USB-C rechargeable battery lasts a long time, several weeks of light use. That's including two 5 hour drives listening to audio books. So maybe it will last even longer, the battery didn't go dead, I just thought it had to be time to recharge it by then. It is handy having 1 button to easily grab to Pause/Play, no matter what the phone is doing. IIRC I think you can answer an incoming phone call with that button as well. Set up was super easy. So easy I don't even remember doing it. The one drawback is that I have to turn it on every time. That means pushing the only button for 6-8 seconds to power on. Even if you leave it connected to auxiliary car power. It blinks blue so you know it is on & connected to your phone. (The blink is mildly annoying, but OTOH also good to know it is ready & connected). The BT adapter stays on until you turn it off, or the phone's BT signal goes away. So you never need to turn it off, it will handle that for you. I left my phone in the car overnight and this BT stayed on, blinking blue all night. Still worked fine the next day. The battery is good! I tried leaving the USB cord plugged into accessory power, which worked out fine. The BT unit was always charged. But it did not behave any differently. I was hoping that if plugged into acc power it might turn on automatically, but no. This is my 2nd BT adapter, and this one is better than the 1st one I bought a few years ago (different brand) which was heavy and had to sit down in the coin dish with the mic & play/pause button buried under the normal car clutter of coins, pens, & chapstick. This one is lighter weight, and it can dangle from the Aux In port, which gets the pause/play/answer button up so it is easy to reach. Also the mic too. Overall- I'd say just buy this one. It is working well and really a great deal as compared to getting a whole new car stereo with all the adapters to get the controls on the steering wheel working. Works great with my Jeep factory stereo. Was super easy to set up. Battery life is amazing. USB rechargeable. Easily saves $400 or more. And it works fine. Recommended. ... show more
Reviewed in the United States on April 5, 2022 by David Nathanson
    • ideal and practical
Review Image by Karol vasquez
This receiver was an excellent purchase for me, since my car doesn't have built-in Bluetooth. Now I can listen to music without issues, and best of all, the connection is very stable and reliable; I highly recommend it for cars like mine.
Reviewed in the United States on July 29, 2026 by Karol vasquez
    • Easy to use but ...
I bought this device to avoid changing my car radio but still wanted the benefits of a Bluetooth device. This seemed like a good and inexpensive option. I already had another good Bluetooth device which I used in my previous car but I changed vehicles and discovered the band on my radio could not be tuned to a higher frequency hence the need to search for an alternative or buy a radio. I chose the former. When purchasing an item I usually go for the one that is overall pick and 4 or more stars. This one fit the bill perfectly. However maybe my expectations were a bit too high for a device under 20 dollars. The device works but its not as great as I expected. For phone calls, callers can hear me ok, could be better, but the audio for me was just too low, or distant may be the best description, even after turning up the volume to the highest level. Also a notable issue for me is that the audio plays from one speaker, specifically the passenger side. I thought maybe my speakers were defective but when I tried the tuner mode it was fine. So I tried to change the settings to balance the sound when using the device but it made no difference. Overall for a quick fix its fine but I think I may have to get a new radio after all. ... show more
Reviewed in the United States on January 16, 2025 by stephenhv

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