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FIFINE K031B Wireless USB Computer Lapel Microphone with Headsest for Fitness Class, Conferencing

FIFINE K031B Wireless USB Computer Lapel Microphone with Headsest for Fitness Class, Conferencing

$ 42.99 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 28 reviews
Easy to use

Simple and easy to use, I teach a few courses and works great especially when you need to record at multiple locations you dont have to worry if the local equipment is working. I have had no real complaints about the recordings. Also i can move away from the desk and talk while writing on the board.

Did I mention its affordable.

Im sure there are better quality microphones out there, but Im not singing and its great for my application.

Tuan Vo
I am a teacher. The K031B is good for recording myself while teaching

I am only using the microphone with the clip and attach to my tie. The sound quality is good for recording myself while teaching. The USB plug and play works great. I can move around the classroom and keep connected.

Matthew Rivera
Use for Yoga and easy to arrange on computer

Had to buy this in a hurry so that I could use it for Yoga classes on line. It proved very good and easy to arrange on the computer. The transmitting pack is not heavy, and the talking quality is easily understood by those who listen. I would recommend it for those doing Yoga.

Richard Dougherty
Bang for the buck, easy to plug the mic into my Iphone with the adapter and hit record!!!

How can a wireless mic be this affordable and still sound decent or even work at all?! Well.... FiFine did it!!! I just plug it into my iPhone with a USB adapter and hit record, its that simple!!! Im no longer tethered to my camera with cables! The sound quality is surprisingly good for this price point! Its crazy how affordable it is!

Bobby Blue
easy to setup and easy to use in the college classroom.

This product was easy to setup and is easy to use. I use this in my college classes. My professor wears the Mic and the people captioning can hear them very clearly with no issues. Occasionally the audio goes out, but it is only for a second. There are a number of things that could be causing that though. I even had one of the captionist ask me what device I was using so she could recommend it to another client because it works so well.

Customer Reviews

Based on 49 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

  • Speaking of power-up, what can be more convenient than a combination of USB and battery power?
  • A receiver actually drains up more power, thus in this wireless system, it gets consistent power from a computer USB port.
  • While the transmitter is powered by a pair of AA batteries, 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.

User-friendly Setup with Computers

  • Power the system up, plug the USB receiver into your computer (Windows or Mac) and wait for the automatical installation of the USB driver.   
  • Once it gets powered from the USB port, it will flash blue light for a while through its vein, which serves as a startup indicator to tell you it is up and running.
  • The headphone jack of the USB dongle provide flexible ways to output the computer sound: through PC's 3.5mm jack or the one of the USB receiver. But make sure you choose the correct output method under software setting. Because the out is default to the USB receiver once it is plugged in.   
  • It is compatible with calling platforms, such as Zoom, Microsoft Meeting, Google Hangout, Skype. And a quick tip here to turn off the feature of auto volume adjustment to get a consistent good sounding.   

Using with Mobiles is neither A Bother 

  • With a USB adapter, it works with an iPhone, iPad or Android. Which adapter you will need is down to the model of your phone. But one thing to keep in mind, when using with mobile, it works as a recording device not for calling. 
  • The small form factor (3"*1"), around 1/6 of the size of your smartphone, allows you to put the USB receiver and phone into even a pocket to carry around.
  • The wireless feature comes in handy if you want to film at a distance from your mobile. The small size capsule of either a lapel or a head-worn will minimize the background sound as much as possible. These two combinations will provide convenience as well as good sounding to your outdoor filming or even field recording.  

Versatility Cannot be Beat

  • A light-weight head-worn mic fits firmly, making it possible to get quality sound for recording fitness or even a high-intensity aerobics tutorial.
  • The clip-on mic is ideal for video conferences and online interviews, audience will not notice the hidden mic under your clothing but will be impressed by its clear sound!

A Quart into A Pint Pot

  • In-born high sensitivity ensures good clarity even from the small clip-on mic. You do not have to set the input gain of the computer high, and people will hear much less distortion in your voice. A better-sounding and more in-person feeling web conferencing is rather easy to pull off. If you have a pretty soft voice, you still have the head-worn mic as a spare option.  
  • 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.  

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 K031B has a stable wireless range up to 80 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 Band
UHF 565-584MHz
Type Condenser
Polar PatternCardioid
Frequency Response50-16kHz
S/N Ratio
More than 58dB
Power SupplyTransmitter: 2 AA Batteries
 Receiver: 5V USB power
Output ConnectionUSB 2.0
Shipping Weight0.8 kg