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K-MIC-OTG – Long Life Covert Audio Recorder with Scheduled Recording Functionality, 4,600 Hours of Storage, & 250 Days Standby Battery

MAP-PRICE: $159.00

K-MIC-OTG – 64GB Powerbank Audio Recorder 250 Days Standby & 550 Hours Continuous

Professional Covert Audio Recorder with Continuous, Scheduled and Voice Activated Recording Options

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Trusted by Hundreds of clients domestically and internationally.


What you need when you need it.


Support hours:

Monday to Friday


Orders received by 1PM MST go out the same day for all US clients.

All Orders ship from our Head Office location in Draper, Utah


PBN-TEC adopt a strict MAP pricing policy

  • 4,600 Hours storage – 64GB (at 32Kbps)
  • 550 Hours Continuous Recording
  • 250 Days Standby Battery
  • Voice Activated, Scheduled & Continuous Modes
  • Magnetic Housing
  • Completely Covert – Fully Functional Powerbank
  • Onboard Playback + OTG Playback
  • 40 Feet Audio Capture
  • Time & Date File Stamping

Professional Grade Digital Audio Recorder with Extra Long Battery Life & Customizable Settings

The K-MIC-OTG professional voice activated audio recorder was designed to fit almost any circumstance.

Includes headphones so you can listen to audio recordings anywhere.

Fully functions as an MP3 player and Powerbank.

You can also playback recordings on phones, tablets, or computers.

Includes an OTG adapter for phones and tablets.

One Button Operation

Turn on the voice recorder with one easy switch. Charge the internal battery with the included USB cable. Charge other devices by plugging them into the recorder. LED indicator shows when recordings start and stop. The powerful magnet allows you to attach the recorder to metal surfaces.

Includes Headphones for onboard playback.

Use the headphones to listen to voice recordings or your own MP3s. You can also use the headphones to switch between voice activated (VOX) or continuous recording modes. The headphones have volume control, play/pause controls, and file deleting or skipping capabilities.

Small Form Factor and Extra Long Battery Life

Because the K-MIC-OTG is a functional power bank, the rechargeable battery is used to keep the recorder in standby mode for an incredible 250 days.

Customize the Advanced Settings to Fit Your Needs

Microphone Sensitivity Change the mic sensitivity (GAIN). Adjust the mic to compensate for background noise, distance, and other environmental factors.
Recording Mode Choose between Continuous Recording or Voice Activated Recording Modes.
File Bitrate The recording bitrate can be compared to the framerate of videos. Lower bitrates mean smaller file sizes but decreased recording quality. Higher bitrates increase recording quality but take up more room on the recorder.
File Format Choose between MP3 and WAV. MP3 files are compressed and take up less room but can mean lower quality. WAV format is uncompressed, meaning a higher quality but larger file size.
File Length Choose how long each recording is. Longer recordings risk losing more recording time if the battery runs out before the recording can be saved.
Recording Timer Set to automatically record for a specific length of time each day for up to 999 days.
Time & Date Stamp Sync the time and date of the recordings with your computer.

Specifications – K-MIC-OTG

Built-in memory 64 GB – 4,600 Hours of Storage at 32Kbps and 580 Hours at 256Kbps
Continuous Recording Time 550 Hours in a single charge
Sound recording activation Yes
Scheduled Recording Yes
Built-in microphone Stereo
Mic Range Up to 40 FT
Recording format MP3, WAV
Power supply Lithium-polymer rechargeable battery
Operation time Up to 550 Hours continuous & up to 250 Days Standby
Player function WMA format

MP3 format

Interface USB & Micro USB
Supported systems Windows Vista, 7, 8,10,11 & Mac OS, OTG Compatibility iPhone/iPad and Android devices including smartphones & tablets
Dimensions 3.5 x 2.3 x 0.875 Inches
Weight 3 oz

User Groups & Pro-Tips

K-MIC-OTG is an advanced Audio recorder with features that are very easy to use, the covert nature of this device makes it a great choice for anyone who wants to have the ability to record audio covertly at any time, the device works as a fully functional MP3 Player and Powerbank, this provides extra protection to users as it can operate in plain sight, users can also schedule audio recordings and conceal the device on a magnetic surface. A versatile professional Audio recorder with a very long battery life.

Requirements & FAQ


  • System Compatibility: Windows Vista, Windows 7, Windows 8, or Windows 10 & 11 & Mac
  • Media player app on phone or computer to play *.MP3 files


Is this device Magnetic?


Can this devices microphone be adjusted for sensitivity?

Yes, using the onboard software, users can adjust mic sensitivity.

Can this device be used as a wearable audio recorder?


Is this device compatible with Windows & Mac?


More Questions?

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K-MIC-OTG Datasheet