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USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
M2000The M2000 Underwater Modem is an underwater acoustic modem designed for reliable communication and scientific data acquisition in demanding subsea environments. Encased in a machined aluminum housing and depth rated to 2000 m, the M2000 is ideal for vehicles, moorings, and research systems requiring robust construction, flexible integration, and dependable acoustic performance. M2000 Features: Long Range Acoustic Communication: 18 km depending on
The M2000 Underwater Modem is an underwater acoustic modem designed for reliable communication and scientific data acquisition in demanding subsea environments. Encased in a machined aluminum housing and depth-rated to 2000 m, the M2000 is ideal for vehicles, moorings, and research systems requiring robust construction, flexible integration, and dependable acoustic performance.
M2000 Features:
- Long-Range Acoustic Communication: 1–8 km depending on conditions and modulation selected.
- Flexible Data Rates: 80 bps to 10,240 bps depending on the selected modulation scheme.
- Single Sideband Voice: Integrated analog SSB voice communications capability.
- Precise Acoustic Ranging: Two-way acoustic ranging with accuracy better than <0.3 m.
- 100 W Acoustic Output: High transmit power for demanding communication links.
- Easy System Integration: Ethernet, RS-422, RS-232, and programmable Linux APIs.
- Onboard Data Logging: High-capacity storage with waveform playback and recording capability.
System Electronics Options:
- PMM5544 - Standard: Dual-core processing, 64 GB storage, proven balanced performance.
- PMM6081 - High-Performance: Quad-core processing, 128 GB storage, enhanced compute capability and autonomy.
Optional Specialized Features (License Required):
- JANUS Support: Enables interoperable underwater communications using the NATO ANEP-87 standard.
- Phorcys Stheno: Adds secure Phorcys communications capability in the 20–28 kHz operating band.
- MARIA: Unlocks the Marine Acoustic Rapid Innovation Architecture for custom acoustic algorithms, PCM data access, and advanced hardware control.
What's in the Box:
- 1x M2000 Underwater Modem
- 1x Battery Charger
- 1x 1 m Lab Cable
Technical Details:
Download the technical specifications sheet at www.popotomodem.com/documentation for more in-depth information.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1530 reviews
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Product Reviews
★★★★★ 5
Inexpensive doesn’t mean cheap.
Color: Black/Orange
After 10 months, zero complaints. Well, I got rid of the horrible NATO strap 🙄. That’s a personal preference. Easy to swap out to whatever you like. Keeps accurate time meaning it’s the same time. I’m not micro analyzing it and the seconds gained/lost. It has a confident look and feel and makes you feel good when wearing it. Sure it’s not high priced but it’s not cheap. Very comfortable, light and not unincumbered. If this is what you’re looking at, you’d be satisfied. Great looking, durable and simple watch. Full confidence.
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Reviewed in the United States on October 25, 2025
★★★★★ 3
Budget Seiko Prospex this is not
Color: Black/Orange
Bought this as a cheap work watch, but I guess all the budget went into the solar technology.
No date adjust feature, gotta crank the crown over and over to adjust the date. (Also no screw-down crown, but that's expected at this price)
Fake diver bezel. Lol why? Cringe as heck. Should of just put a compass bezel on there instead tbh.
Cheap plastic crystal, scratches and mars just by looking at it.
Okay NATO strap. Falls apart quickly, but it's easily replaceable with a better quality one.
Decent lume on the hands, but none on the hour markers even though it looks like there is.
Looks cool.
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Reviewed in the United States on June 13, 2025
★★★★★ 5
Simplicity
Color: Black/Orange
This watch was received exactly as advertised. First off the watch is economical compared to other watches that advertise the same details. I will say that I have gone through numerous Luminox watches only to be disappointed. This watch fits the bill. It does have solar cells which mean it needs to be exposed to light to keep running, not a problem. Three minutes under my surefire light I am golden. The bezel doesn't rotate actually no big deal for me. I have always required that the bezel moves not anymore after having a bezel that rotates I use it next to never. Here's why, the more I rotate the bezel the more the numbers wear off. The strap on the watch with the catches for the strap are perfect. They actually hold the watch strap in place in lieu of like other big name brands that just flop and slide. As far as everyday use goes this watch is my go to. To be honest I have purchased three. This is the only watch I will wear moving forward, yeah the glass my scratch but even the big names like the Luminox I spoke of earlier scratches too.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Long time waiting. Finally go it!
Color: Black/White/Black
Love it. Perfect size. Quality is good!! Worth the money. Light is bright. Able to change strap
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Durability 💪
Color: Black/White/Black
Good work watch. I put it in mud, water and gravel. Keeps on ticking 👍
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Reviewed in the United States on May 20, 2026
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