SJCAM M3 Wireless Lavalier Microphone 2TX+1RX USB-C - Dual Recording System

SJCAM M3 Dual Wireless Microphone

Digital wireless audio system based on the 2.4 GHz band, designed to capture clean sound in mobile environments. Its dual configuration (two transmitters and one receiver) allows two audio sources to be recorded simultaneously and independently, eliminating the need for external recorders in interviews or podcasts.

Audio quality and processing

Acoustically, it incorporates 360-degree omni-directional condenser capsules. The system supports a maximum Sound Pressure Level (SPL) of 120 dB, which prevents analogue clipping in loud environments. With a signal-to-noise ratio (SNR) of 86 dB and a DSP noise reduction algorithm, the device minimises background noise and purifies vocal frequencies from ambient noise.

Connectivity and monitoring

The receiver connects directly via USB-C and operates under the Plug and Play standard, being compatible with Android and iOS (v15+). Unlike other entry-level models, the SJCAM M3 includes a 3.5mm jack port for real-time monitoring, allowing you to control gain and signal quality during recording.

Battery life and charging

Power management relies on a 950 mAh capacity charging case. Each 15 gram transmitter provides 7 hours of continuous use, while the case allows up to three additional recharges, extending the total autonomy to over 20 hours. Battery status is displayed via an LED indicator panel on the front of the case.