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FIFINE Wireless Lavalier Microphone for Conference, Fitness Class, Plug & Play on Mac/Windows-K031B

FIFINE Wireless Lavalier Microphone for Conference, Fitness Class, Plug & Play on Mac/Windows-K031B

$ 54.99 USD

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What's Included

  • FIFINE K031B transmitter (body-pack)
  • Lavalier mic & Head-worn mic 
  • Receiver (USB type-A 2.0 connector)


Recording tutorial video cannot be any easier 

  • USB connection means a doddle to use with Windows, Mac or Linux. 
  • Headphone jack on USB dongle serves as an external sound card for audio output or monitor. 
  • Battery-powered transmitter & 5V-USB-powered receiver provide convenience both in and out door.
  • When using with speaker/camera for speech/camera filming, FIFINE MICROPHONE K037B is more suited. 

Make vlog or recording anywhere 

  • With a proper USB adapter, it will work with iPhone or Android. (USB type A to USB type C or lightning adapter)
  • Using an audio cable and a power bank, you can hook it up with digital recorder 
  • Compact size allows you to put the USB receiver and phone into pocket or with recorder into small travel bag to carry around.
  • Wireless feature comes in handy when you want to film at a distance from your phone but have as little background sound as possible.

Versatility cannot be beat

  • Light-weight head-worn mic fits firmly, making it possible to get quality sound for recording fitness or even even high intensity aerobics tutorial. 
  • Clip-on mic is ideal for video conference, online interview, hiding under shirt but still capturing clean sound. 

Have an impressive web conferencing or live streaming 

  • In-born high sensitivity ensures good clarity. The less gain you boost, the more natural sound you get. 
  • Cardioid pattern does an excellent job at reducing noise, especially background noise.
  • Audience will not notice the mic but will be impressed by its clear sound!

User-friendly design & powerful performance

  • Easy-to-read transmitter LCD display shows battery life and current frequency channel. 
  • Aesthetic receiver veins flash blue light for once when it get powered or paired. 
  • UHF (Ultra High Frequency) is more penetrable and powerful, and thus a better choice for using in built-up areas.
  • Wireless range can go up to 80 feet even in the face of obstacle.
  • 20 selectable frequency channels allow conflict-free transmission in less perfect environment. 

What's the point of 20 channel

  1. When experiencing interference, one click on the top button of transmitter to find the best-suited channel. Frequency conflict can not spoil your show anymore.
  2. Multiple sets of K031B can be utilized concurrently for group interview recording. Check out tutorial on how to use 3 of K031B on one computer at the same time. 


Frequency Band

UHF 565-584MHz

Type Condenser
Polar Pattern Cardioid
Frequency Response 50-16kHz
S/N Ratio More than 58dB
Power Supply

Transmitter: 2 AA Batteries  

Receiver: 5V USB power

Output Connection USB 2.0


*If you need product support or tutorial video, check out more at K031B technical support page

*Wanna get more info about tech aspect or get email support, feel free to contact us

1. Order Information

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.


2. Shipping Policy

Q: Do you have international shipping?

A: Sorry, no. Products on FIFINE website are not available for global shipping. Delivery covers only US (50 states only and APO/FPO address is not included), Canada and UK. For customers who live outside US, CA and UK, you can check out on FIFINE AliExpress Store. 


Q: When will my order ship?

A: We process your order as soon as we receive it, which takes less than 18 hours. At that time, you can email us to cancel the order.


Q: When can I expect my package to arrive?

A: 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 business days (based on your location), which counts from the day when your order is processed. Carriers include DHL, UPS, USPS, LaserShip and Canada Post. Please note that for Alaska or Hawaii address, shipping could go up to 7-14 days.    

3. If it is emergent order that needs to be delivered in 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.  


3. Return Policy

Q: What is your return policy?

A: FIFINE MICROPHONE offers Free Returns within 30 days. If you are not completely satisfied with your purchase and wish to return a product, then please contact our email. We will gladly give you the refund 


Q: How do I request a return?

A: Below are the procedures to return a product

1. Send us an email 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 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.



Once package has been shipped out, order cancellation is not possible. When product arrives, buyers are responsible for arranging return shipping 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. 

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).
  • Any product shipped to us without a return authorization will be returned to the customer at his or her expense.
  • You are responsible for shipping the products back to us. We recommend using a trackable shipping method. 


4. Refund Policy

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 5 to 7 business days. Please be aware that the refund will depend on the policies of PayPal that was used for payment.


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

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