Wireless Lavalier Microphone with 8GB Storage and 820ft Range

In this review the Neewer CM31 proves to be a compact, no-fuss lavalier system aimed at creators who need reliable on-camera audio and a built-in backup recorder. The single biggest reason to buy is its combination of wireless transmission with onboard 8GB storage allowing 14 hours of 48kHz/24bit lossless recording, which means you can capture local files even if your camera or phone disconnects. Setup is plug-and-play and the kit works with phones, tablets, laptops and cameras without installing an app, making it practical for interviews, vlogs and mobile podcasts.

Key Features

• Plug & Play for Three Devices: The receiver supports connections to up to three devices at once using included OTG adapters and a 3.5mm TRS cable, so a phone and a camera can record simultaneously.
• 14 Hours 48kHz/24Bit Recording: Onboard 8GB storage records uncompressed, lossless audio for up to about 14 hours, providing a reliable backup if a connected device fails.
• Long Battery Life: The receiver and transmitters deliver extended use with the charging case providing roughly 24 hours of total operation after multiple recharges.
• Noise Cancellation and Gain Control: One-click noise reduction, a mute option and 15 gain levels let users fine tune clear audio in varied environments.
• Wide Transmission Range: With a high-gain LDS antenna, the system claims stable transmission up to 1000ft/300m in open areas, reducing dropouts during remote shoots.
• High-Quality Audio Response: 20Hz-20kHz frequency range and 78dB signal-to-noise ratio produce full-range, low-noise recordings suitable for video and spoken-word content.

Who It's For

This kit is best for solo creators, interviewers and small production teams who need a compact wireless lavalier that doubles as a standalone recorder. The built-in 8GB storage and lossless 48kHz/24bit recording make it attractive to content creators who want a reliable backup recording alongside camera or phone audio.

It is less suitable for users requiring professional multi-channel mixing or XLR connections; anyone needing studio-grade multi-mic setups or extensive post production routing should consider larger systems. Also, real-world transmission range can vary with obstacles, so those who must operate through heavy interference should test range before critical shoots.

Pros & Cons

Pros

• Excellent combination of wireless and onboard recording that prevents data loss if a device disconnects.
• Simple plug-and-play compatibility across phones, tablets, computers and cameras without extra software.
• Long battery life and a charging case that extends usable time for day-long shoots.
• Flexible noise cancellation, mute and gain controls for cleaner voice capture in varied settings.

Cons

• Claimed maximum range is optimistic; performance will depend on environment and obstacles.
• Built-in storage is useful, but users needing multi-channel session recording will find it limited.

Specifications

Recording format	48kHz/24Bit lossless
Internal storage	8GB (approx. 14 hours)
Frequency response	20Hz-20kHz
Transmission range	Up to 1000ft/300m (open area)
Battery life	Receiver and transmitters plus charging case for about 24 hours total
Max SPL	115dB with distortion under 0.1%
Connections	OTG adapters and 3.5mm TRS cable for phones, cameras and computers

Our Verdict

The CM31 is a sensible, value-oriented choice for vloggers, podcasters and mobile journalists who want reliable wireless performance plus a built-in backup recorder. Its plug-and-play compatibility, long battery life and noise-cancelling options make it a practical all-in-one tool for field recording, though those needing advanced multi-mic routing or guaranteed long-distance links in cluttered RF environments should consider higher-end systems.

Frequently Asked Questions

Can it record without being connected to a phone or camera?
Yes. The transmitter/recorder can store audio to its 8GB internal memory for up to about 14 hours at 48kHz/24bit.

Will it work with my phone or camera?
It is designed for broad compatibility and includes OTG adapters and a 3.5mm TRS cable to connect to iPhone, USB-C Android devices, tablets, laptops and DSLR/camcorder inputs.

How reliable is the wireless range?
Range is up to 1000ft/300m in open areas with the LDS antenna, but walls, interference and body placement can reduce that in real-world use.