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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 Sunday, Jul 19
Order within 2 hours and 52 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

Pairing Steps: 1.Press and hold the MFB for 3 seconds to power on, the indicator light flashes red and blue alternately, which means it’s pairing mode. 2.Connect the AUX port on Bluetooth receiver to the audio input port of the home speaker or car stereo system with provided 3.5mm audio cable, or plug your 3.5mm wired earphone into the AUX port on Bluetooth receiver. 3.Turn on the Bluetooth function of your smart phone, search"J33" and connect. After successful connection, the indicator flashes blue once every 5 seconds. 4.Now you can enjoy music or answer hands-free calls. 1. After successfully pairing with the first Bluetooth device, turn off the Bluetooth function of the first device, and the Bluetooth receiver will enter the pairing mode again. 2. Turn on the Bluetooth function of the Bluetooth device, search for "J33" and connect. 3. Turn on the Bluetooth function of the first Bluetooth device, select "J33" in your pairing history. 4.Now two Bluetooth devices are connected to the receiver at the same time. 1. Please make sure you have powered on the receiver, and the indicator light flashes red and blue alternately. 2. Clear the pairing list of your Bluetooth enabled phone, MP3, etc. then try again. In standby status, press "+" and "." at the same time for 2 seconds to clear the pairing record, The LED flashes red and blue alternately and J33 will not connect to previous devices automatically. Universal 3.5mm audio jack design Multi-function button for Play/Pause and one-click answering “+/ -” button for volume adjustment and Next/ Previous track 2 hours fast charging and 16 hours working time, which means you can enjoy music and calling for almost the entire day before next recharge. Your long road trips will never be boring. Bluetooth V5.0 with low power consumption, compatible with IOS and Android devices. The built-in microphone can be used to answer hands-free calls. Pair with mobile phone/MP3/ Tablet, etc. and turn your old car stereo/home stereo/3. 5mm wired headphones into wireless. Once the wireless receiver has successfully paired with the phone, its power will be displayed on the phone to know its usage time. (PS: Most Android phones will display the battery percentage on the Bluetooth connected device interface of the phone.) Bluetooth Receiver* 1 3.5mm Male to Male Connector* 1 3.5mm Audio Cable * 1 Type-C Charging Cable * 1 User Manual* 1 Size: 1.6 × 1.6 × 0.4 in Net Weight: 0.5oz This Bluetooth AUX receiver is small and lightweight, which makes it very easy to carry. You can take it anywhere for enjoying wireless music and hands free call!

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


Includes Remote: No


Installation Type: Plug In


Outer Material: Plastic


Power Source: Battery Powered


Rechargeable Battery Included: Yes


Voltage: 5 Volts (DC)


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


Bluetooth support?: Yes


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: 0.5 Ounces


Battery Weight: 1 Grams


Lithium Battery Weight: 0.05 Grams


Brand: LAICOMEIN


Model Name: J33


Unit Count: 1.0 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: Sunday, Jul 19

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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Similar Products

Top Amazon Reviews

    • Small but powerful
So I've tried it out for over a week now both in my car and connected to a sound system and it's worked great every time. I've used it for streaming podcasts in my car and streaming music to the sound system. Even with all that use, my phone reports it still has 80% battery life. So I guess we'll see if that suddenly drops to 0% or continues to gradually decrease. The only issue I had was when I first received it, in order to power it on, I couldn't have the audio cable connected. After that and the initial pairing, I simply just hold the power button for 2 seconds and it turns right on. I also just hold the power button for 2 seconds to power it off if I don't want to wait. So if you've charged it and it won't turn on, disconnect the cable from it and hold the power button down for about 2 seconds, then plug it in to the audio adapter or cable. The volume has been plenty loud in my car. I hear no difference with the wired or bluetooth connection. (I currently have an older android phone with a headphone jack). Using the sound system it was also plenty loud, too loud in fact that I turned down the sound system. In writing this I realize I haven't actually tried the volume buttons on the side so that also could help make it louder or quieter. Pairing it was simple with my phone. I've also had another friend pair to it and didn't have a problem. In all instances the phones have been pretty close so I can't speak to the distance but in my uses for it, it will always be within 6' of my phone anyways. It does speak the words paired so you know. Pros: *Small, like really small. *Good battery life (so far) *Sounds good. *Good volume output. *Comes with handy audio adapter and cable *USB-C for charging. *Affordable Cons: *When used in car during a phone call, sounds a little bit distant but my wife hasn't ever complained she can't understand me or can't hear me so this is just a minor con. *Comes with the shortest charging cable. Don't know what car you could use that in to charge and also have it connected to the stereo aux jack. So you will need a longer USB-C cable. *Nit picky here but I would prefer the blue led to just stay solid when paired instead of pulsing. I don't really notice it but I haven't also driven at night so I don't know if it would annoy me or not. Just be aware that the light alternates blue/red with it isn't connected and then pulses blue when it is ... show more
Reviewed in the United States on April 8, 2022 by Travis Wertz
    • Great receiver.
I got a older version of this like 5 years ago, it still works great. Got a newer one because I liked it so much for another car. Works great, sounds quality is great, and the battery lasts a long time. Very east to use. Highly recommended.
Reviewed in the United States on April 30, 2026 by Nathaniel B.
    • 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
    • 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.
    • Fixed my stereo
Easy hookup to my rv stereo. My bluetooth in the rv would not pair this year so I tried this and it worked great. Easier and cheaper than replacing the stereo unit.
Reviewed in the United States on May 14, 2026 by Amazon Customer
    • Perfect older speakers. Amazing battery life
It’s perfect for older monitors or speakers, and the sound quality isn’t altered at all which was my biggest concern. I also love that it’s wireless and has a strong range. I can walk into different rooms with my phone and the audio still sounds great. The battery life has been impressive so far. I’ve used it multiple times and haven’t had to charge it yet. It also automatically turns off if it’s not in use for a while, which is a great feature for saving battery. Definitely a solid product for the price. ... show more
Reviewed in the United States on February 13, 2026 by Amazon Customer
    • Works perfectly and fast connection
Very good device. It connects to Bluetooth quickly without any issues, and the battery lasts a long time. Smooth and convenient for daily use
Reviewed in the United States on April 11, 2026 by Yelena Litovchenko
    • Bad sound quality
Bad sound quality.
Reviewed in the United States on June 20, 2026 by Ethan

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