Skip to main content
FallHalloweenPetLawn & GardenTruck & AutomotiveClothingPoultryHeating & CoolingHorseSporting GoodsOutdoor Power EquipmentFencing & GatesLivestockOutdoor LivingPet & Animal PharmacyToolsHome ImprovementFarm & RanchBoots & ShoesTrailers & TowingHome Decor & FurnitureWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​

Sign In / Enroll

Get rewarded!

​
Menu

Search

Home

Sign In

Cart
0.0
(0)
0.0 out of 5 stars.
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Sporting Goods
  4. /
  5. Camping & Hiking
  6. /
  7. Navigation & Radios
  8. /
  9. Two-Way Radios
  10. /

  11. Uniden 4-Pin Accessory CB Microphone, UNNBC645

  1. Home
  2. /
  4. /
  5. Two-Way Radios

Uniden 4-Pin Accessory CB Microphone, UNNBC645

Shop all Uniden

  • Limited Time Deal

Uniden 4-Pin Accessory CB Microphone, UNNBC645

Item # 178800399

Uniden Uniden 4-Pin Accessory CB Microphone, UNNBC645
Uniden Uniden 4-Pin Accessory CB Microphone, UNNBC645
$22.49

Sale

Was$24.99

Save $2.50

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all Uniden

  • Limited Time Deal

Uniden 4-Pin Accessory CB Microphone, UNNBC645

Item # 178800399

Uniden Uniden 4-Pin Accessory CB Microphone, UNNBC645
Uniden Uniden 4-Pin Accessory CB Microphone, UNNBC645

$22.49

Sale

Was$24.99

Save $2.50

financeCard Logo
New Cardmembers earn a $20 Reward‡ with qualifying purchase of $20 or more plus earn 5% in Rewards+ on this purchase. Valid through 8/9/26.

This item is available online only

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Looking for a replacement CB microphone? Check out the Uniden 4-Pin Accessory CB Microphone! This is an electret condenser replacement microphone that is wired for Uniden 4-pin radios. It comes with an 8 ft. extra-flexible cord.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • Electret condenser replacement microphone for CB radios; wired for Uniden 4-pin radios
  • Built to be trucker tough
  • 8 ft. flexible, coiled cord
  • 90 day limited warranty
BrandUniden
Country of OriginImported
Battery SizeN/A
Display TypeNone
Frequency BandNone
Maximum Radio Range0 M
Number of Call Alerts0
Number of Frequencies0
Number of FRS Channels0
Number of FRS/GMRS Channels0
Number of GMRS Channels0
Number of Privacy Codes0
Package Quantity1
Power SourcePlug-in
Primary ColorBlack
Product Height1.5 IN
Product Length4 IN
Product Weight0.31 LB
Product Width2.75 IN
Warranty90-day limited
Manufacturer Part NumberUNNBC645
No questions have been asked about this product.

No questions have been asked about this product.

Q&As

No questions have been asked about this product.

No questions have been asked about this product.

Similar Items

  1. Uniden 40-Channel CB Radio with SSB
    4.0 out of 5 stars with 1 reviews
    4.0 (1)

    Uniden 40-Channel CB Radio with SSB

    $229.99
  2. Uniden 40-Channel Compact CB Radio
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden 40-Channel Compact CB Radio

    $99.99
  3. Uniden 40-Channel 4W Compact CB Radio
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden 40-Channel 4W Compact CB Radio

    $99.99
  4. Uniden 40-Channel Handheld CB Radio
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden 40-Channel Handheld CB Radio

    $80.99
    Was $89.99Save $9.00
  5. Uniden Bearcat Handheld Scanner, UNNBC125AT
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden Bearcat Handheld Scanner, UNNBC125AT

    $189.99
  6. Uniden HomePatrol 2 Handheld Scanner, UNNHMPATROL2
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden HomePatrol 2 Handheld Scanner, UNNHMPATROL2

    $749.99
  7. Uniden Atlantis 275 Floating Handheld 2-Way VHF Marine Radio
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden Atlantis 275 Floating Handheld 2-Way VHF Marine Radio

    $149.99
  8. Midland Portable Mobile CB Radio
    4.0 out of 5 stars with 23 reviews
    4.0 (23)

    Midland Portable Mobile CB Radio

    $129.99
  9. Astatic Noise-Cancelling 4-Pin CB Microphone
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Astatic Noise-Cancelling 4-Pin CB Microphone

    $44.99
    Was $49.99Save $5.00
  10. Top Rated
    Cobra 40-Channel Handheld CB Radio, Black
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Cobra 40-Channel Handheld CB Radio, Black

    $99.99
  11. Midland Emergency Crank Weather Radio
    4.3 out of 5 stars with 87 reviews
    4.3 (87)

    Midland Emergency Crank Weather Radio

    $69.99
  12. Cobra 40-Channel AM/FM CB Radio with Microphone, 29 LTD Classic (Chrome)
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra 40-Channel AM/FM CB Radio with Microphone, 29 LTD Classic (Chrome)

    $179.95
    Was $189.99Save $10.04

Items You May Like

  1. President Ted FCC 40-Channel 12-Volt AM/FM CB Radio, TXUS004
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    President Ted FCC 40-Channel 12-Volt AM/FM CB Radio, TXUS004

    $54.00
    Was $59.99Save $5.99
  2. Cobra 40-Channel AM/FM Compact Professional CB Radio with Microphone, Chrome Face, 25 LTD Classic
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra 40-Channel AM/FM Compact Professional CB Radio with Microphone, Chrome Face, 25 LTD Classic

    $149.99
  3. President RW Maryland USA 57.87 in. Tunable Radial Whip CB Antenna
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    President RW Maryland USA 57.87 in. Tunable Radial Whip CB Antenna

    $59.99
  4. Top Rated
    President ADAMS FCC CB Radio
    5.0 out of 5 stars with 2 reviews
    5.0 (2)

    President ADAMS FCC CB Radio

    $69.00
    Was $74.99Save $5.99
  5. Cobra 40-Channel AM/FM CB Radio with NightWatch and Microphone, Chrome Face, 29 NW LTD Classic
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra 40-Channel AM/FM CB Radio with NightWatch and Microphone, Chrome Face, 29 NW LTD Classic

    $169.99
  6. RoadPro 18 ft. Mini 8 Clear Pl-259 to Pl-259
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    RoadPro 18 ft. Mini 8 Clear Pl-259 to Pl-259

    $17.99
    Was $19.99Save $2.00
  7. Midland Surveillance Headsets Kit
    4.5 out of 5 stars with 40 reviews
    4.5 (40)

    Midland Surveillance Headsets Kit

    $39.99
  8. RoadPro CB Ant Mount Ss Bar for Volvo Trucks
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    RoadPro CB Ant Mount Ss Bar for Volvo Trucks

    $11.69
    Was $12.99Save $1.30
  9. Top Rated
    Motorola Solutions 2-Way Radios, Black/Blue, 3-Pack
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Motorola Solutions 2-Way Radios, Black/Blue, 3-Pack

    $89.99
  10. Midland 2-Way Radio Kit, 15 Channels, 40 Mile Range
    4.6 out of 5 stars with 43 reviews
    4.6 (43)

    Midland 2-Way Radio Kit, 15 Channels, 40 Mile Range

    $129.99
  11. Cobra GA-SV01 Surveillance Headset with Microphone, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra GA-SV01 Surveillance Headset with Microphone, 2-Pack

    $39.99
  12. RoadPro 30 in. Stainless Steel Ring Tuned Base Load
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    RoadPro 30 in. Stainless Steel Ring Tuned Base Load

    $16.19
    Was $17.99Save $1.80

Customers Also Bought

  1. Uniden Bearcat 880FM 40-Channel CB Radio, AM/FM Transmit and Receive with 7-Color LCD Display
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden Bearcat 880FM 40-Channel CB Radio, AM/FM Transmit and Receive with 7-Color LCD Display

    $199.99
  2. Uniden Atlantis 155 Floating Handheld 2-Way VHF Marine Radio, 1W/3W
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Uniden Atlantis 155 Floating Handheld 2-Way VHF Marine Radio, 1W/3W

    $98.99
  3. Motorola Solutions 2-Way Radios, Black/Blue, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Motorola Solutions 2-Way Radios, Black/Blue, 2-Pack

    $64.99
  4. Cobra TrailBlazer 250 GMRS 2-Way Radios, 2-Pack, Orange/Black
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra TrailBlazer 250 GMRS 2-Way Radios, 2-Pack, Orange/Black

    $99.99
  5. Cobra PX650 Pro Business 2-Way Radios, 42 Mile Range, 6-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra PX650 Pro Business 2-Way Radios, 42 Mile Range, 6-Pack

    $349.99
  6. Cobra FLT Floating Waterproof 2-Way Radios, 37 Mile-Range, Camouflage, 2-Pack
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra FLT Floating Waterproof 2-Way Radios, 37 Mile-Range, Camouflage, 2-Pack

    $134.99
  7. Cobra Swivel Holster and Belt Clip for Cobra Performa 400/450 2-Way Handheld Business Radios
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra Swivel Holster and Belt Clip for Performa 400/450 2-Way Handheld Business Radios

    $9.99
  8. KENWOOD UHF Antenna for KENWD 2-Way Radios
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    KENWOOD UHF Antenna for KENWD 2-Way Radios

    $22.99
  9. TruckSpec CB Antenna Coax Cable CB Ham Radio Cable 18 ft. Rg-58Au Coaxial
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    TruckSpec CB Antenna Coax Cable CB Ham Radio Cable 18 ft. Rg-58Au Coaxial

    $13.49
    Was $14.99Save $1.50
  10. Cobra ACXT145 FRS 2-Way Radios, 16 Mile Range, 3 pk.
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Cobra ACXT145 FRS 2-Way Radios, 16 Mile Range, 3 pk.

    $34.95
    Was $59.99Save $25.04
  11. Midland T71 2-Way Radio Kit, 36 Channels, 38 Mile Range, 2-Pack
    4.7 out of 5 stars with 100 reviews
    4.7 (100)

    Midland T71 2-Way Radio Kit, 36 Channels, 38 Mile Range, 2-Pack

    $89.99
  12. Top Rated
    Cobra Road Trip Handheld CB Radio with Antenna, 4W, 4 Miles, Black
    5.0 out of 5 stars with 1 reviews
    5.0 (1)

    Cobra Road Trip Handheld CB Radio with Antenna, 4W, 4 Miles, Black

    $139.99

Reviews

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Be the first to review this product
Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.