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FIFINE K037B Wireless System with Lapel Mic and Headset for Speaker, Camera, Android and iPhone

FIFINE K037B Wireless System with Lapel Mic and Headset for Speaker, Camera, Android and iPhone

$ 44.99 USD

  • 10% Discount Code: FifineMic10

Order & Shipping Policy

Q: What if I want to cancel the order right after payment?

A: Please contact us immediately if you would like to make changes to your order.


Q: Do you have international shipping?

A: Sorry, no. Products on FIFINE website are not available for global shipping. Delivery covers UK, CA and US (APO/FPO address is not included). For customers who live outside these regions, you can check out on FIFINE AliExpress Store

Address of the US warehouses: 17531 Railroad St., Unit A, City of Industry, CA, 91748 United State 

Address of the CA warehouses: 450 Derwent PL, Delta, BC V3M 5Y9 Canada

Address of the UK warehouses: Plot 1, Lyons Park, Lyons Dr, Coventry, West Midlands CV5 9PF United Kingdom


Q: When will my order ship?

A: We process your order as soon as we receive it. And because of current situation, the processing time could take up to ONE business day, which is not added up to the shipping time. 


Q: What if I provide the wrong/I want to change the shipping address?


If you find out the incorrectness or want to make changes before receiving shipping confirmation notification. Please message us as soon as possible so that we can correct the address or cancel the order. We are available at email: or Facebook messenger: 

If the package has already been shipped, we will message you with the carrier info as soon as possible. Then you can contact them to relocate a correct address. If it can not be changed, we have to wait till the package being sent back to proceed a refund. And if it is not returned to sender successfully, we have no responsibility for issuing a refund or replacing the package.   


Q: When can I expect my package to arrive?


  1. If it is a pre-order or back-order that is in stock, your package will be shipped first.  
  2. Delivery takes 4-7 days (based on your location), which counts from the day when your order is processed. Shipping cost is free when your order weighs below 1.51 kg.     
  3. If it is emergent order that needs to be delivered on a specific date, please contact us before placing the order.  


Q: When will I receive my shipment tracking number?

A: You will receive a notification email about the tracking information once your order leaves warehouse that is close to your location.  


Q: What if tracking info indicates the package was received but I haven't actually receive it?


First off, please wait for one more business days, tracking info update could be ahead of the actual delivery. 

Next, if you still haven't received package, please call and email the local post office. They will have more info than we can see online. 

At last, when post office is not able to help find the package, you should send us the screenshots of communication with post office as evidence for us to file a complaint. With a response from Post Office through your contact, confirming that package is missing, we will do a refund on the product price. 


Return & Refund Policy

Q: What is your return policy?

A: FIFINE MICROPHONE offers Free Return within 30 days, counting from the date when the tracking info shows delivered.  

But it does not cover bulk purchase (more than three), intact item, item ordered by mistake. If you wish to return a product, please contact us. 


Q: How do I request a return?

A: Please follow the steps below to return a product:

  1. Contacted our email at with your order number and the reason for return (Any product shipped to us without a return authorization will be returned to the customer at his or her expense).
  2. We will email you back to confirm the product condition. Custoemr will have responsiblity to help provide the info (pictures and recording) we required. Then we will give instructions for returning and a return number.
  3. Ship your unused product in its original packaging to the address identified in our email.
  4. Note: Return shipping fee is covered by FIFINE only if returns are for defective products, products that were not described accurately, or incorrect orders. Whether a product is defective depends the info that customer provides (pictures and recording). 


"Return Terms"

  • Please be sure to use the original box, and the shipping carton and its packing material to ship the item back (the item is returned in the same condition as it was when shipped).
  • You are responsible for shipping the products back to us.If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item. 


Q: After I have returned a product, when will I see the refund in my account?

A: After receiving and examining your returned product(s), your refund will appear in your account within 3 to 5 business days. Please be aware that the refund will depend on the policies of PayPal that was used for payment.


Other Terms and Conditions

"Bulk Purchase Return"

If buyer bought more than THREE products at a time, any one of them is defective, we will provide the free replacement.

But if buyer decides to return them all, we will charge a restocking fee of 30% of the order total. And buyer is responsible for the shipment back to FIFINE local factory. 


Once package has been shipped out, order cancellation is not possible. When product arrives, buyers are responsible for arranging return shipping and covering the cost by themselves and emailing us back with tracking number. If buyer decides to refuse package instead, we will charge a restocking fee of 30% of the order total. 

Notice: Refund of "refuse-to-receive" item does not cover the origianl shipping fee, That means in this case, we will send back the payment of only the product listed price. 

"Intact Items"

An intact item is one that its package has been opened and it works without a problem. If you want to return an intact product, the return shipping cost shall be covered on customer side. And we will deduct the original shipping fee from the refund total.            

"Defective Items"

A defective item is one that is inoperable but has no apparent damage. If you receive a defective product, please contact our email for assistance.

Notice: Whether a product is defective depends the info that customer provides (pictures and recording). 

"Damaged Items"

If the order arrives at you with obvious shipping damage, please refuse the delivery and email us with your order number. If you have accepted it, please save all packaging material and paperwork for the order and also email us for instructions. If you dispose of packaging material, you jeopardize our chances of making a claim, and you may not receive the return.

"Limits of Responsibility"

We take no responsibility for user-initiated damage and/or loss of parts incurred during operation or use of the product. Though you still can email us for assistance on repairing or replacing components.

"Price and/or Description Changes"

All prices, pictures, and descriptions on this website are subject to change. We maintain no responsibility for inadvertent errors. When you place your order with us, you agree to the price and terms indicated on this website. Price differences related to future or past prices in FIFINE MICROPHONE store are not refundable.

Notice: We are sorry that the price fluctation during pandemic is not refundable.

"Errors on FIFINE MICROPHONE website"

Prices and availability of products are also subject to change without notice. Errors will be corrected where and when discovered. We reserve the right to revoke any stated offer, cancel orders, and to correct any errors, inaccuracies or omissions in any stated offer or price, including after an order has been submitted and whether or not the order has been confirmed and your payment processed. If your payment has already been processed for the purchase when your order is canceled, we will issue an immediate refund.

"For product FAQs, please turn to the Technical Support Page"

Customer Reviews

Based on 19 reviews
John Bejo
Great but Please, put a VOLUME dial

I've been using this product for two months already. I bought it through Lazada Philippines. I bo ught this because of the 3-pin connector and because it is Fifine. Everything I like, but I HOPE that your put a VOLUME controller or dial in it in your next version. I have difficulty adjusting the volume of the mic away from the amplifier. -
My RAYHAYES RA-08 lapel has a volume dial in it, which is very handy. I wish you put one on this too.
And yes, keep it as affortable as it is.
Thank you.

Order 729072688632874
Placed on 04 Nov 2023 23:05:54

Hi John,

Thank you so much for the positive feedback, we are encouraged by your comments.

We will soon send your advice to our engineering team to see if we can make some improvements to our future models. Hope to bring you a better experience in the near future.

Kind regards,

Paul Willeto
Wireless FIFINE K037B Wireless System with Lapel Mic and Headset for Speake

I like it. It worked for me as a amateur musician.

Love my new mic!

This old lady can handle the tech--and leading singalong at Assisted Living is so much better. Thank you for an affordable, usable product.

Dan Earl
A Solid Budget-Friendly Wireless Kit

For the price, you get a good quality wireless system.
I actually had the opportunity to test and review the system, and was genuinely surprised.
It's easy to use and good for seminars, church services, speaking engagements, etc.
You can check a more in-depth review I made on youtube if you're interested:

It connects 100% of the time and is extremely easy to use

Even though this isn't the most expensive wireless setup and the size is relatively big it connects 100% of the time and is extremely easy to use. It says the range is only about 60 ft and I have definitely gone further and had great quality, but it does take a little bit of tweaking to get the exact sound you want.

Customer Reviews

Based on 43 reviews Write a review

Unique Identification of Connection

It makes this wireless system less difficult to set up than you might imagine. Even if multiple sets will be used at a time, you just need to power the systems up one by one, the receiver and the transmitter of each setup will sync up automatically.  

Convenient Supply of Power

  • When it comes to efficiency and consistency, battery power may not be the best choice for indoor. But if it is about field usage and you do not want to bother with a bulky AC outlet power bank, battery-powered devices can just walk over. Reload and pair up in just seconds and crack on again.       
  • The receiver gets power from a pair of AAA size batteries while the transmitter is powered by the AA ones, either rechargeable (Duracell is recommended) or one-off (Amazon Basics is recommended).
  • An easy-to-read LCD of the transmitter shows the battery life and the current frequency channel.

The compatibility is hard to fault

  • With this wireless system, an instructor or a presenter needs not to be an audio techie to finish the setup. The whole system is rather self-explanatory: a receiver receives the audio signal and sends it to a speaker or PA system. You just need to find an input port on your speaker that matches the size of the plug (1/4" or 6.35mm) on the receiver.
  • To sync the system successfully, please turn off your speaker Bluetooth and hook up the device providing background music to the speaker with wire connection. To get the best sound out of it, please set a decent input gain level on your speaker.
  • You may want to change the tone a bit to suit the situation more or record down your public address, then plug the receiver of this wireless system into a microphone or a 1/4" jack of your mixer and you are up and running! 
  • For a field recording, it may look embarrassed and can be inconvenient to hold a huge recorder in front of your face. Especially when you want to record from a distance and still need the audio with less background noise. Then hook up this wireless mic to a 1/4" or a 3.5mm (via the included camera adapter) of your recorder.

Pull all the accessories out of the bag

Interchangeable Lapel Mic

Ideal for presentation, speech in a large venue, audience will not notice the hidden mic under your clothing but will be impressed by its clear sound!

Interchangeable Headworn Mic

Light-weight, but fits firmly, making it possible to get no-choppy sound when using in a Yoga teaching or most high-intensity aerobics classes.

TRRS Mobile Adapter

Turns the 1/4" plug into a common one on your phone/tablet. If it's a USB Type-C mobile, you also need a headphone adapter (not included).

TRS Camera Adapter

The right-angle design is useful for connecting the receiver to a bulky camera or camcorder, which prevents the plug from breaking in just a nudge.  

  • The less you boost the audio signal, the more natural sound people will hear. Plus the in-born high sensitivity, which makes a lower gain setting on your speaker possible. To pull off a better-sounding and more in-person feeling presentation will never be this easy. If your is pretty soft voice, you have the head-worn mic covering your back. It points more directly to your mouth to pick you up well.  
  • The cardioid pattern does an excellent job at reducing noise, especially background sound. Plus a tiny size of the lapel capsule, the noise rejection is just off the scale.
  • It does NOT work with computers. If you want to host a Zoom call on your laptop or PC, please turn to the K031B USB wireless system instead:   

Raise your game of mobile streaming

  • Your fancy smartphones may not bad at sound quality. But it can not cope with the situation that you are not talking close to it. If you are concerned about background sound, a shotgun mic is far from ideal either. The choice of a wireless system is not left over, in fact it can easily become the answer for its decent clarity and flexibility of moving around.
  • Once connected it with your mobile, you will NOT hear any sound coming out of your phone. Unless you unplug the receiver. So it is only suitable for recording not for video calls, conferencing. 

Get more versatility in camera recording

  • In video content creation, if you do not want to get yourself much into the trouble of post-production, getting the best audio quality is one of the most crucial parts. But you may want some long shots to spice up your video. A shotgun mic does the job well if you are standing still in some distance. But when you start moving around, it really cannot stack up against a wireless microphone.
  • We recommend using it only on a device with a 1/4" input. But it is possible to get it to work on a speaker that has just a 3.5mm aux port when you just cannot find any proper speaker. Just make sure you use this camera for the connection.

Cut-price But Undiluted Performance

The UHF (Ultra High Frequency) is well-known for its penetrable signal. So it is a better choice for using in built-up areas, rather than VHF, Bluetooth or WiFi. With such a powerful signal, even the budget wireless microphone K037B has a stable wireless range up to 45-60 feet. The range may vary in the face of obstacles, but you still have plenty of room to play with. 

Time to pull off the Party Trick

  • There are 20 selectable frequency channels of this wireless system, which ensures conflict-free transmission even in less perfect environments. Because you can simply avoid frequency issues by clicking the top button to change to another channel. Within a second, the system will pair and be back on form again. Frequency conflict can spoil your online course no more.
  • Because of such a feature, you can utilize 3 to 5 sets concurrently by setting them in different frequency channels.


Frequency BandUHF 565-584MHz
Polar PatternCardioid
Frequency Response50-16kHz
Power SupplyTransmitter: 2 AA Batteries
Receiver: 2 AAA Batteries
Output Connection1/4" TS connector (1/4" to 1/8" TRS and TRRS adapters)
Shipping Weight0.8 kg