Features:
This on-camera shotgun microphone with uni-directional condenser capsule and supercardioid polar pattern, provides excellent sounds and decreases ambient noise while recording sound with greater clarity.
3.5mm plug of the microphone makes it compatible with DSLR cameras, camcorders and audio recorders that equipped with 3.5mm microphone input.
The microphone features an integrated shock mount with cold shoe and 1/4″ screw hole, which makes it can be mounted on the camera, camcorder or boom pole steadily, and it is ideal for interviews, ENG and more.
The microphone has a 3.5mm headphone jack, allowing real-time monitoring of your source; powered by 2 * AA batteries(not included), low power consumption and long operating hours.
Comes with a foam windscreen and a fur windscreen that help to decrease vocal plosives and wind noise when recording dialog; also including a microphone carry pouch for easy storage and convenient carry.

Specifications:
Brand: BOYA
Model: BY-BM3030
Color: Black
Acoustic Principle: Line Gradient
Directional Pattern: Super-Cardioid
Frequency Response: 40-20000Hz
Sensitivity: -38dB±3dB at 1kHz
Signal to Noise Ratio: 78dB
Output Impedance: 200 ohm
Power Supply: 2 * AA batteries(not included)
Item Size:approx. 21 * 10.3 * 5cm/ 8.3 * 4.1 * 2in
Item Weight: 130g/ 4.6oz(without windscreen)
Package Size: 24 * 16 * 9cm/ 9.4 * 6.3 * 3.5in
Package Weight: 356g / 12.6oz

Note:
The camera showed in the picture is not included.

1 * Microphone
1 * Foam Windscreen
1 * Fur Windscreen
1 * Carry Pouch
1 * Users’ Manual(EnglisH)

BOYA BY-BM3031

BY-BM3031 is a supercardioid condenser Mic microphone that delivers high-quality sound for DSLRs, camcorders, audio recorders and more.

It features a three-level gain switch that provides a +20 dB boost, 0 dB unity gain, or -10 dB pad to prevent distortion from audio overload. And also features a switchable high-pass filter at 80 Hz to roll off unwanted low-frequency noise and rumble.
The lightweight mic attaches easily to any camera equipped with a 3.5mm microphone jack or to a boom pole, and integrates a built-in shock mount that helps eliminate unnecessary vibrations that create excessive backgound noise.
This mic includes a foam windscreen and fur windscreen that helps to decrease vocal plosives and wind noise when recording dialog and powered by two pieces of AA batteries (not included) for up to 120 hours.

Highlights
– Broadcast recording quality microphone for clear, precise audio
– Supercardioid polar pick up pattern
– Lower Noise and Higher Sensitivity
– Two step High Pass Filter (flat, 80Hz)
– Three position level control (-10dB, 0, +20dB)
– 3.5mm Output Plug
– Integrated Shockmount & Shoe Mount
– Powered by 2 x AA batteries (not included)
– Durable ABS Construction
– Includes fur windscreen

Specifications
Acoustic Principle: Line Gradient
Directional Pattern: Super-Cardioid
Frequency Response: 40-20,000Hz
Sensitivity: -38dB±3dB@1KHz
Signal to Noise Ratio: 80dB
Dynamic Range: 120 dB
Output Impedance: 200 Ohms
Power Supply: 2 x AA batteries (not included)
Operating time with battery: 120H
PAD Switch: -10dB,0dB,+20dB
High Pass Filter: Two-step (flat, 80 Hz)
Output Connectors: 3.5 mm (1/8″) stereo mini-jack
Size: 209.7 x 103.3 x 50mm (8.2” x 4” x 2”)
Weight: 132g (4.7 oz)

BOYA BY-BM3032

The BOYA BY-BM3032 is a supercardioid on-camera shotgunmicrophone offering directional audio capture, adjustable gain(10db, 0, +20d B), High Pass Filter(0HZ, 75 Hz, 150HZ) and broaddevice compatibility forvideo production, vlogging, YouTubers,and sound recordists. It also features the safety channel option on right channel which helps you select wanted sound levelwhen you are not sure how loud the audio be captured or some unexpected screeched might be.

And a selectable 5dB boost button for high frequency can alloto used in some situation, such as using microphone outside withfur windscreen.

With 3. 5mm TRS jack, the microphone can be used to capture audio for camcorders, DSLR, and portable recorders, It can run for approximately 30 hours on two AA batteries( NOT INCLUDING).

Acoustic Principle: Line gradient

Polar Pattern: Super-cardioid

Frequency Response: 20-20,000Hz

Sensitivit: -30+3db(0d B=1V/Pa 1 KHZ)

Output Impedance: 200∩————S/N:85db

Gain Control: 10db. 0db, +20db

High Pass Filter: 0HZ 75HZ 150HZ

Output Connector: 3.5 mm(1/8 )stereo mini-jack

Power Requirement:1.5V*2AA——–Operating time with battery: 30H

Size: 209.7×103.3X50mm(8.2″X4″x2″)———Weight:180g(6.30z)

BOYA BY-BM3011

BOYA BY-BM3011 is a compact and robust directional condenser microphone, which can improve the sound quality of videos based on built-in microphones.
With TRS cable and TRRS output cable included, it can be used for smartphones, tablets, DSLR cameras, camcorders, audio recorders, computers and more.
With the directional condenser capsule, BY-BM3011 reduces ambient noise while recording sound with greater clarity.
It also features an integrated 1/4 “-20 anti-shock attachment that can be mounted on a video camera or boompole and ideal for YouTube, Vlogger and more.
3.5mm Mini Plug output connector; Durable ABS construction.
BY-BM3011 includes a foam windshield and a fur windshield that help reduce voice noise and wind noise when recording dialogue.

Compatible with smartphone, DSLR cameras, camcorders,PC etc
Powered by smartphone, tablets,camera no need battery
Reinforced ABS construction,super light weight
3.5mm TRS & TRRS output cable both included
Foam windshield included
Specification：
Polar Pattern: super cardioid
Frequency Response: 40-20,000Hz
Sensitivity: -35dB±3dB@1KHz
Plug: 3.5mm TRS & TRRS connector
Dimensions(L*H*D): 6.6*3.0*2.0” (168*77.2*49.9mm)

Net Weight: 2.2oz(63g)

Acoustic Principle: Condenser
Polar Pattern: Super-cardioid/Stereo
Frequency Response: 20-20,000 Hz
Sensitivity: -30±3dB (0dB=1V/Pa @ 1KHz)
Output Impedance: 50Ω
Signal to noise ratio: 82dB
Gain Control: -10dB,0dB,+20dB
High-pass Filter: 0Hz, 75Hz
Output Connector: 3.5mm TRS audio output
Power Requirement: Two AA batteries (not included)
Operating time with battery: 30 hours
Other functions: Automatically Power ON
Size: 184 x 65 x 122mm (7.2” x 2.5” x 4.8″)
Weight: 170g (6 oz)