MQ-U350: The Professional Gold Standard in USB Surveillance

The Esonic MQ-U350 is the ultimate covert audio solution for those who demand high-capacity storage and extreme battery endurance. Disguised as a common USB flash drive, it is engineered to be a silent, permanent fixture in any office or home environment, providing a layer of security that is physically and electronically invisible.

Tactical Performance & Capacity Options

• Dual-Capacity Versatility: Available in 8GB (storing up to 288 hours) or the massive 64GB version (storing up to 2,304 hours). Whether you need short-term evidence or a month-long audio archive, there is a model suited for the mission.

• Extreme Standby Endurance: Featuring the legendary SVOS (Super Voice Operated System), the MQ-U350 can remain in standby mode for up to 25 days on a single charge, only activating when human speech is detected.

• Continuous Power Mode: Unlike wearable devices, the MQ-U350 can record while plugged into a computer or a USB wall charger, allowing for indefinite, 24/7 monitoring of a room without ever worrying about battery life.

• Date & Time Stamping: For professional and legal use, each file is embedded with a precise time/date stamp, ensuring a chronological chain of evidence that is vital for documentation.

Why the MQ-U350 is Virtually Undetectable

1. Perfect Camouflage: It functions as a real USB drive. Even if plugged into a computer, it appears as a standard storage device. The recording controls are hidden and require no specialized software to manage.

2. Zero-Signal Security: This is a strictly air-gapped device. It emits no radio frequencies (RF), Wi-Fi, or Bluetooth signals, making it completely immune to electronic bug sweeps and signal detectors.

3. Silent Sentinel: The device is 100% solid-state with no moving parts, no flashing lights, and no audible alerts. It remains perfectly dark and silent even while actively capturing audio.

4. Forensic Clarity: The high-sensitivity microphone is optimized for voice frequencies, capturing clear dialogue from up to 10 meters away, even if the drive is tucked inside a laptop port.

Technical Summary

The Esonic MQ-U350 is the professional choice for long-term room monitoring. It combines the world’s best standby battery life with a form factor that is never questioned in a professional setting. Choose the 8GB for tactical deployments or the 64GB for an exhaustive, long-term audio record.