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Countryman B3 Omni Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters (Black)

BH #COB3W4BSR • MFR #B3W4FF05BSR
153 reviews
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Countryman B3 Omni Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters (Black)
Key Features
  • For Interviews, Drama, and Water Sports
  • 3.5mm Locking (SR), See Description
  • 20 Hz to 20 kHz Frequency Response
  • Includes 3 Capsule Protection Grids
The black B3 Omnidirectional Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters from Countryman is a water-resistant, miniature lavalier microphone for capturing high-quality audio. It can be used in a variety of applications such as a tie-clip lavalier in interviews, a hair-hidden mic for drama, a water-resistant mic for water sports and hurricane reporting, or simply a small mic to hide in a prop flower vase.
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Countryman B3 Overview

The black B3 Omnidirectional Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters from Countryman is a water-resistant, miniature lavalier microphone for capturing high-quality audio. It can be used in a variety of applications such as a tie-clip lavalier in interviews, a hair-hidden mic for drama, a water-resistant mic for water sports and hurricane reporting, or simply a small mic to hide in a prop flower vase.

The capsule is resistant to moisture, which allows for placement in the hair or on bare skin, and its omnidirectional polar pattern minimizes handling noise, wind noise, and plosives (popping). Furthermore, a variety of skin-matching colors are available. The B3's cable terminates to a 3.5mm locking connector for direct connection to a Sennheiser Evolution Series (G2 and G3), ew 100, ew 300, ew 500, or SK 1093 wireless bodypack transmitter. Additionally, a carrying case, two cable clips, a windscreen, and three protective caps are also included.

Unobtrusive
Looks great when you want to see it, virtually disappears when you don't. The B3 is easily hidden in hair or on costumes, with five colors to match clothing, hair, and skin tones. Use a felt tip marker to color the white caps, for near-perfect concealability. Never suffer the hassle and degraded sound quality of miking under clothing again.
Rugged and Reliable
The B3 is resistant to makeup, sweat, and moisture when used with the supplied protective caps, and works well in hair or on the body. The protective caps are easily removed for cleaning or replacement, and the aramid-reinforced cable gives it world-class survivability.
Refined Sound Quality
The B3 provides high-quality audio with low distortion at SPL up to 150 dB on 48V phantom power. The aramid cable and thin diaphragm combine to offer low handling noise. The flat frequency response accurately captures voice or instruments, and the small size makes the B3 easy to position for ambient noise and feedback rejection.
Versatile
Changable protective caps let you shape the frequency response for different situations and match other microphones. Versions are available for different speaking or singing styles, with high overload capability for recording instruments.
Sensitivity
Standard, for most uses.

Countryman B3 Specs

Key Specs
Microphone Type
Lavalier
Compatible Transmitters
Audio 2000's:
Gemini:
Sennheiser:
Polar Pattern
Omnidirectional
Frequency Response
20 Hz to 20 kHz
Sensitivity
4 for Standard/Most Uses (B6, B3, B2D)
Analog Output
1x 1/8" / 3.5 mm TRS Male
Environmental Resistance
Water-Resistant (Unrated)
Microphone
Microphone Type
Lavalier
Compatible Transmitters
Audio 2000's: AWX6030M
Gemini: UHF-6000BP
Sennheiser: SK100G1, SK100G2, SK100G3, SK100G4, SK1093, SK20, SK300G1, SK300G2, SK300G3, SK300G4, SK500G1, SK500G2, SK500G3, SK500G4, SKAVX, SKD1, SK-XSW, SL Bodypack DW, XSW-DTX35
Polar Pattern
Omnidirectional
Included Tone/Pattern Caps
Flat-Response, +4 dB Bright, +8 dB Very Bright
Performance
Frequency Response
20 Hz to 20 kHz
Sensitivity
12.0 mV/Pa
Countryman Sensitivity Code
4 for Standard/Most Uses (B6, B3, B2D)
Connectivity
Analog Output Connector
1x 1/8" / 3.5 mm TRS Male
Cable Length
5' / 1.52 m
Power
Power Sources
Plug-In Power
Operating Voltage
3.0 to 12.0 V (Bias/Plug-In Power)
Physical
Color
Black
Environmental Resistance
Water-Resistant (Unrated)
Dimensions
ø: 0.23H: 0.18" / ø: 5.8H: 4.6 mm
Weight
0.01 oz / 0.34 g
Packaging Info
Package Weight
0.465 lb
Box Dimensions (LxWxH)
9.2 x 5.05 x 1.4"

Countryman B3 Reviews

Great microphone!

By Dale
Rated 5 out of 5
Date: 2026-04-10

I needed a replacement lav mic to replace one that was damaged on set and I needed it fast. B&H was one of the only stores that had it in stock and shipped it very quickly.

Bias or Phantom Power Needed For Mic To Perform Well

By Don
Rated 5 out of 5
Date: 2022-06-07

Please note: EVERY microphone requires power (gain) to work properly and these Countryman lavaliers require a MINIMUM of 4V bias or 12V phantom to work. This power can be provided by a camera or preferably a wireless body pack or small recorder. Example: the Zoom F2 provides 2.5V of bias power which will not drive the Countryman B3. The signal (sound) will be very low and gain will need to be provided by a stronger source before reaching the camera or recorder to obtain -12 to -18 dbl. Location Audio 101.

See any errors on this page?

is it good for Rode Wireless GO ?

is it good for Rode Wireless GO ?
Asked by: MARAT
I've used int with the Rode wireless GO without issue. The 3.5mm snaps in all the way and there is still a little room to rotate the locking nut. My only issue is that my camera only records on one channel, but the Rode Lav Go mic records on both channels.
Answered by: Mark
Date published: 2021-06-02

hi, please what is the key difference between the ...

hi, please what is the key difference between the low and the standard sensitivity?
Asked by: Cephas
i think the low sensitivity is for use in really loud environments...? i'm pretty sure the standard is what i use for normal usage.
Answered by: Jason
Date published: 2020-02-21

question

Will this lav work with a Tascam DRL-10?
Asked by: Jason
Yes it will. They have the same connector.
Answered by: John P.
Date published: 2021-01-08

The black B3 Omnidirectional Lavalier Mic, ...

The black B3 Omnidirectional Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters is compatible with the Sennheiser SK 100 G4 bodypack wireless transmitter?
Asked by: Carlos Henrique
Yes. This Countryman lavalier microphone complements the Sennheiser wireless bodypack transmitter superbly!
Answered by: Mark S
Date published: 2020-03-18

Can this be used with the Saramonic UwMic9 ...

Can this be used with the Saramonic UwMic9 system? If so, how would it compare to the included mic and other mic upgrade options?
Asked by: Allen
I am not familiar with the Saramonic but I am sure the Countryman will make it sound great. I love the mic for the price. I use mine with a Sennheiser.
Answered by: Michael
Date published: 2021-02-04

Will this work with the Sennheiser XSW-D PORTABLE ...

Will this work with the Sennheiser XSW-D PORTABLE LAVALIER SET?
Asked by: Dan
Indeed it will.
Answered by: Mark S
Date published: 2021-06-10

Will this mic work with Tentacle Track E?

Will this mic work with Tentacle Track E?
Asked by: Asm
Yes. Only mics for Sennheiser wireless tx.
Answered by: Bojidar
Date published: 2021-05-22

Any issues with using the Countryman B3 with the ...

Any issues with using the Countryman B3 with the Zoom H1n?
Asked by: Mike
This version of the Countryman B3 has a locking 3.5mm connector which is compatible for Sennheiser wireless transmitters and will not properly connect to the input on the Zoom H1n. B&H # COB3W4BZP / MFR # B3W4FF05BZP is the same Countryman B3 Omnidirectional Lavalier Mic with standard sensitivity and a non-locking 3.5mm connector in black. It is listed as compatible for Azden wireless transmitters and will also work with the Zoom H1n. The mic does draw a lot of power so it will drain the H1n's battery quicker than other lavalier mics. As another option, you may want to consider the Countryman EMW Omnidirectional Lavalier Microphone in black, which is B&H # COMEMWSFF05B / MFR # MEMWSFF05BD3. The EMW requires less power and is designed for use with digital recorders.
Answered by: Lisa S
Date published: 2019-07-25
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