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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

$ 39.99 USD

What's Included:

  • FIFINE K031B transmitter
  • Lavalier mic & Head-worn mic 
  • Foam cover (already attached)
  • Receiver (1/4" output connector)


Recording tutorial video cannot be any easier 

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

Make streaming or vlog anywhere 

  • Compact size and wireless feature come in extremely handy when carrying it around. 
  • With proper USB adapter, it will work with iPhone or iPad for vlog recording. 
  • Using extra audio cable and power bank to hook up with digital recorder, you can make anywhere your recording studio!  

Versatility cannot be beat

  • Head-worn mic fits securely for fitness tutorial recording or active video presentation. 
  • Clip-on mic with secret feature is optimized for video conference, online interview, etc.  

Have an impressive video meeting or live stream 

  • In-born high sensitivity ensures great clarity even without mic gain boost. 
  • Cardioid pattern does an excellent job at reducing noise, especially the background noise.
  • Audience will not notice the mic, but they will definitely be impressed by the clear sound!

User-friendly design for outdoor recording

  • Easy-to-read LCD screen shows battery life and frequency. Noticeable receiver light indicates status.   
  • Get battery or frequency change in a second when any cutout or dropout happens.  
  • UHF (Ultra High Frequency) gets longer range and powerful signal than the Bluetooth.
  • Guarantees good penetration in the face of obstacle within 80 feet
  • 20 selectable frequency channels allows conflict-free transmission in less perfect environment. 

What's the point of 20 channel

  1. When experiencing interference, just click the channel button (top button) to change and find the best-suited channel. Frequency conflict can not spoil your show anymore.
  2. More than one mic can be utilized concurrently. Ideal for group interview recording.   



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

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

1. Order Information

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

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

2. Shipping Policy

"Do you have international shipping?"

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

"When will my order ship?"

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.

"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 2-5 business days (based on your location), which counts from the day when your order is processed. Carriers include UPS, USPS, LaserShip and Canada Post. Please note that for Alaska or Hawaii address, shipping could go up to 7 days.    
  3. If it is emergent order that needs to be delivered in specific date, please contact us before placing the order.  

"When will I receive my shipment tracking number?"

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

3. Return Policy

"What is your return policy?"

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


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.   

"How do I request a return?"

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.

"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

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

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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