The Ocean Reef M-105 Digital Tranceiver Surface Unit – 110/220v W/battery Tester is an underwater communication system from Ocean Reef – lets divers talk to each other underwater. Clear, reliable, and depth-rated, it’s the gear that keeps dive teams coordinated at Sipadan’s UNESCO reef walls.
Technical Specifications
| Specification | Details |
| Brand | Ocean Reef |
| Product | M-105 Digital Tranceiver Surface Unit – 110/220v W/battery Tester |
| Range | – |
| Battery | Rechargeable |
| Depth Rating | 100m |
| Transmission | Acoustic / Optical |
| Best For | Diver-to-diver communication |
Key Features
- Clear audio: Underwater communication that actually works – hear your dive buddy clearly.
- Depth-rated: Sealed and waterproof to 100m.
- Easy to use: Simple controls – works even with gloves on.
- Rechargeable battery: Long life between charges.
Suited for Malaysian Dive Sites
The Ocean Reef M-105 Digital Tranceiver Surface Unit – 110/220v W/battery Tester is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Sipadan’s UNESCO reef walls, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse after every use.
- Dry the mic and speaker ports thoroughly.
- Recharge between sessions.
- Store dry in a protective case.
Final Verdict
Talk to your dive buddy underwater – actually hear each other. The Ocean Reef M-105 Digital Tranceiver Surface Unit – 110/220v W/battery Tester makes underwater communication reliable and straightforward.




Daniel Lee –
What kind of maintenance is required for this product? Are there any specific cleaning instructions or recommended maintenance schedules?
Junhao Lo –
Thank you for your question about the maintenance required for the Ocean Reef M-105 Digital Tranceiver Surface Unit! To ensure the longevity and optimal performance of your unit, we recommend the following: Regularly inspect the unit for any signs of wear or damage. For cleaning, use a soft, dry cloth to wipe down the exterior and avoid using any harsh chemicals or abrasive materials. As for specific maintenance schedules, we recommend checking the unit’s battery level every 6 months and replacing the battery if necessary. It’s also essential to perform a thorough inspection of the unit before each dive. For more detailed information, please refer to the user manual, which can be found on our website.
Ava Lin –
I’ve been using this product, and overall, I’m satisfied with its performance. However, I did encounter a minor issue with the battery tester – it didn’t accurately gauge the voltage on a few occasions. It’s not a deal-breaker, but it’s worth noting.
Liam Wong –
I’ve been using the product for a few months now, and I must say, it’s been a game-changer for my job as a marine engineer. The fact that it can test batteries and function as a tranceiver surface unit is incredibly convenient. The build quality is top-notch, and I’ve had no issues with its durability or reliability.
Kevin Lee –
What’s the warranty like for this product? Does it cover any defects or issues that may arise after purchase?
Junhao Lo –
Thank you for reaching out to us, Kevin. We’re happy to provide you with information about our warranty policy. The Ocean Reef M-105 Digital Tranceiver Surface Unit comes with a 2-year limited warranty that covers defects in materials and workmanship. This warranty also protects against any manufacturing defects that may occur within 2 years of the purchase date. If you encounter any issues or notice any defects during this period, please don’t hesitate to contact us for assistance. We’ll be more than happy to help you with any repairs or replacements. If you have any further questions or concerns about our warranty policy, please don’t hesitate to reach out to us. We’re here to help.
Jason Chan –
But what about safety features? Does it have any automatic shut-off in cases of power surges? I’m worried about damaging the unit.
Junhao Lo –
Thank you for sharing your concerns, Jason. We understand the importance of safety features in our products. The Ocean Reef M-105 Digital Tranceiver Surface Unit does indeed have a built-in automatic shut-off feature to protect against power surges. Additionally, it has a ruggedized design to withstand harsh marine environments. The unit also comes equipped with a battery tester, which allows you to check the status of the batteries before use. We take product safety very seriously and have implemented various measures to ensure our units are protected against potential issues. Would you like more information on our safety features or have any further questions?
Emily Tan –
I’ve been using this product for a while, and I’m really impressed with its performance. The user interface is intuitive, and it’s easy to use even for someone who’s not tech-savvy. The price was a bit steep for me, but I feel it’s worth it.