So, does using the two transmitters at the same time result in one output on the left channel and the other on the right?

I had to test this to get it right. If you have the receiver set to stereo then one microphone A sounds in the left and the other one B on the right. If you set the receiver to Mono then both sound in both sides. It's actually confusing because I thought it would be the other way around

Comica cvm-wm300 how big is the mic itself without the windscreen? we have to tape to actors chest, is this small enough to hide it?

It's fairly sizable. If you have an iPhone, it's as wide as the HOME button. If the actor is wearing a tight shirt, it will be visible. I have used this system 4 times now and I am thrilled with it's performance. The mics are actually pretty good. They are omni, so they will pick up a lot, but you can reduce their volume on the receiver to help. When hiding a lav, I just borrow the lav from my TR10L. I will be buying smaller lavs though. It's between countryman and JK (cheapie) lavs. Might buy the JK and test it.

Is the wm300-htx compatible with the wm200-rx?

YES, The Comica CVM-WM300 HTX is compatible with the Comica CVM-WM200 RX. The Comica CVM-WM200 HTX is compatible with the Comica CVM-WM300 RX too.

Is the lifespan of comica-wm300(a) limited to the lifespan of built-in rechargeable lithium battery? or, is battery replacement service available?

sorry for the late reply. In the case of full charge, the battery can be used for 8-12 hours, we can provide battery replacement service, if you need, please contact customer service staff through the order.

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Dual Wireless Lavalier Microphone System,Comica CVM-WM300A UHF 96 Channel Professional Lapel Lav Microphone for DSLR Canon Nikon Sony Camera XLR Camcorder Youtube Interview TV Video Recording(2TX+1RX)

Dual Wireless Lavalier Microphone System,Comica CVM-WM300A UHF 96 Channel Professional Lapel Lav Microphone for DSLR Canon Nikon Sony Camera XLR Camcorder Youtube Interview TV Video Recording(2TX+1RX)

Product ID: 49484370

Details

Brand
COMICA
Color
black
Compatible Devices
Camcorder
Connectivity Technology
Auxiliary XLR
Connector Type
3.5 mm Jack
Model Name
WM300A

📏394 ft max wireless range in open space

📡96 UHF Channels for interference-free audio

🔋14-hour rechargeable battery life

Description

🎤 Elevate your sound game—wireless freedom meets pro durability!

PRO GRADE LONG RANGE - Capture flawless audio up to 394 feet outdoors—perfect for dynamic shoots, live events, and sprawling sets without signal dropouts.
REAL TIME AUDIO MONITORING - Instant headphone monitoring with detailed LCD display for signal, battery, and audio levels keeps you in control on every take.
SEAMLESS MULTI DEVICE SYNC - One receiver controls 2 transmitters with 96 channels, ensuring crystal-clear, interference-free sound for dual interviews or multi-cam shoots.
ALL DAY POWER FAST CHARGING - Built-in 1800mAh lithium batteries deliver up to 14 hours of continuous use with USB-C charging—record and broadcast worry-free.
RUGGED METAL BUILD SECURE CONNECTIONS - Full-metal housing and screw-in 3.5mm cables provide military-grade durability and no accidental disconnects during critical moments.

The Comica CVM-WM300A Dual Wireless Lavalier Microphone System offers 96 UHF channels, a robust 394-foot wireless range, and up to 14 hours of rechargeable battery life. Designed with full-metal construction and secure screw-in cables, it delivers professional-grade audio monitoring and interference-free performance ideal for content creators, interviews, and live broadcasts.

Specifications

ASIN	B075FM4ZYM
Antenna Location	Content Creators, Interview, Streaming, TV Report, Video Conference
Audible Noise	65 Decibels
Best Sellers Rank	#79,399 in Musical Instruments ( See Top 100 in Musical Instruments ) #1,114 in Wireless Lavalier Microphones & Systems
Brand	COMICA
Built-In Media	3.5mm TRS-TRS Audio Output Cable,3.5mm TRRS-XLR Audio Output Cable,, Carry Case, Microphone Transmitter2 ,Receiver1
Color	black
Compatible Devices	Camcorder, Camera, Smartphone
Connectivity Technology	Auxiliary, XLR
Connector Type	3.5 mm Jack, XLR
Customer Reviews	4.3 4.3 out of 5 stars (136)
Enclosure Material	Full-metal
Frequency Range	Group A Wireless Frequency:534.125MHz ~ 557.875MHz, Group B Wireless Frequency:566.125MHz ~ 589.875MHz
Hardware Platform	Camcorder, Camera, Smartphone
Item Dimensions	3.5 x 14.2 x 10.2 inches
Item Weight	2.1 Kilograms
Manufacturer	comica
Mfr Part Number	CVM-WM300A
Microphone Form Factor	Lavalier
Model Name	WM300A
Model Number	CVM-WM300A
Number of Batteries	3 Lithium Polymer batteries required.
Number of Channels	96
Polar Pattern	Omnidirectional
Power Source	Battery Powered
Signal-to-Noise Ratio	70 dB
Special Feature	60HR Battery, 96-channel, Adjustable RF Signal Strength, Full-metal, M/S Switch
UPC	707409206773

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