COHANA GL-37 128GB Magnetic Voice Recorder
Magnetic 128 GB recorder stores 9000 hours, runs 90 days standby and cuts 92 % of background noise
- Battery runtime90 days
- Audio recording formatWav
- Storage media128 GB
- Host interfaceUSB3.0_C
- ConnectionHeadphones: 3.5 mm
- Battery pack5 g, 90 days, lithium polymer, 3.7 Wh, 1
- 128 GB capacity stores up to 9000 hours of audio recordings
- AI noise reduction filters up to 92 % of background sound
- Magnetic dual-sided mount enables hands-free recording on metal surfaces
- USB 3.0 Type-C and 3.5 mm headphone jack for fast transfer and playback
- 90-day standby battery life supports long-term deployment without recharging
Ultra-Slim Magnetic Voice Recorder
The COHANA GL-37 is a 128GB magnetic voice recorder measuring 0.25 inches thick and weighing 13 grams. It captures audio in WAV format with adjustable bitrates from 512 Kbps up to 3072 Kbps. The built-in 360-degree microphone with automatic gain and AI noise reduction filters up to 92% of background noise. It suits students, professionals and journalists who need a discreet, portable device for lectures, meetings and interviews.
Replaces Bulky Recorders and Separate Storage
This unit replaces larger handheld recorders and separate USB drives by combining recording, MP3 playback and file storage in one magnetic square. The jump is worthwhile when you need hands-free attachment to metal surfaces, up to 9000 hours of recording at 32 Kbps, or 90 days of standby time from the 3.7 Wh lithium-polymer battery. It is not for buyers who require internal storage beyond 128GB or who need a second simultaneous recording channel.
Plug-and-Play with USB-C and 3.5 mm Output
Installation is immediate: the recorder starts in seconds with no app or Wi-Fi setup, and connects via USB 3.0 Type-C to Windows, Mac, Android and iOS (with adapter) for file transfer and charging. The 3.5 mm headphone jack allows direct monitoring. The main friction point is managing the five selectable bitrates to balance file size against clarity, and ensuring the magnetic mount has a suitable metal surface for stable placement.
How it compares
Measured against everything we stock in Digital Audio & Voice Recorders, at today’s prices. Recalculated every night.
- Price $73.99
- Pricier than about 72% of the 321 comparable items (median $49.99).
Specifications
| Product | |
|---|---|
| Brand name | COHANA |
| Model name | GL-37 |
| Storage | |
| Storage media | 128 GB |
| Audio & video | |
| Audio recording format | Wav |
| Ports & slots | |
| Host interface | USB3.0_C |
| Connection | Headphones: 3.5 mm |
| Power | |
| Battery runtime | 90 days |
| Battery pack | 5 g, 90 days, lithium polymer, 3.7 Wh, 1 |
| Size & build | |
| Product dimensions | 0.25 L × 0.25 W × 0.25 H inches |
| Product weight | 0.1 kg |
| In the box | |
| In the box | Recorder, instruction manual, charging cable, headphones |
Questions about this item
How thick is the GL-37 recorder so I know if it fits my wallet slot?
The GL-37 measures 0.25 inches thick, roughly the width of two stacked credit cards, so it slides into most wallet pockets or notebook spines without bulge.
Does the magnetic mount need any adhesive or screw holes to stay on a metal filing cabinet?
No adhesive or screws are required; the built-in dual-sided magnets clamp directly onto any ferrous surface such as a filing cabinet, desk leg, or vehicle panel for instant hands-free recording.
When the internal lithium-polymer cell no longer holds a 90-day standby charge, can I replace it myself?
The battery is sealed inside the 13 g chassis and is not user-replaceable; once capacity drops you would need to send the unit for professional service or replace the recorder.
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