Ocean Reef GSM MERCURY - DUAL POWER (New!)
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Ocean Reef GSM MERCURY - DUAL POWER (New!) is backordered and will ship as soon as it is back in stock.
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Ocean Reef GSM MERCURY - DUAL POWER (New!) is backordered and will ship as soon as it is back in stock.
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Product Information
The Ocean Reef GSM Mercury Dual Power is a digital wireless underwater communication unit for Ocean Reef integrated dive masks (IDMs). Instead of two separate frequency channels, it runs one channel with two selectable power modes, normal power and reduced power, so voice stays clear in confined water such as pools and training tanks, and it is powered by a rechargeable, changeable battery rated at approximately 30 hours.
Who it is for
This unit suits full face mask divers who need to talk underwater, including during pool and confined water sessions, and recreational divers who want hands-free voice contact. Reduced power mode is intended to keep sound clear in confined water such as pools and tanks.
Key details
- One channel with two modes: normal power and reduced power.
- Two speakers with volume adjustment, 3 level volume.
- DAT (Digital Activation Transmission) hands-free mode, plus a solid push-to-talk button.
- Rechargeable, changeable battery, approximately 30 hours of autonomy, charged with a standard micro USB cable.
- Foldable design that stays on the mask, so the unit does not need to be assembled and disassembled to remove it.
- Black. SKU OR033155.
Compatibility and sizing
The GSM Mercury Dual Power can be assembled only on Ocean Reef IDMs equipped with an Extender Frame. It talks to all prior Ocean Reef underwater wireless units and to competitor units operating on the same frequency and channel. The PTT button is built for D-mic 2.0 swappability, and all 2020 units use the new Blue Mic in place of the previous D-Mic.
DiveCatalog.com is an authorized Ocean Reef dealer and a real dive shop in Irvine, California since 2003. Call or chat with us at 888-701-4017 if you want to confirm your mask has the Extender Frame or that your team's existing units will pair with it.
- One channel, two power modes normal power plus reduced power to keep sound clear in confined water such as pools and tanks.
- Approximately 30 hour battery brand new rechargeable, changeable battery pack.
- Micro USB charging recharges with a standard micro USB cable.
- Two speakers with volume adjustment 3 level volume control.
- DAT hands-free mode Digital Activation Transmission lets the unit transmit without holding a button.
- Push-to-talk button easy, solid PTT with D-mic 2.0 swappability.
- Blue Mic all 2020 units use the new Blue Mic in place of the previous D-Mic.
- Foldable on the mask folds inside the mask, so there is no need to assemble or disassemble the comm unit to take it off.
- Digital unit in the line of the DC, the first ever unit introduced in the market.
- Cross compatible works with all prior Ocean Reef underwater wireless units and competitor units on the same frequency and channel.
- Extender Frame mount assembles only on Ocean Reef IDMs fitted with an Extender Frame.
| Brand | Ocean Reef |
| Model | GSM Mercury Dual Power Communication Unit |
| Type | Underwater wireless communication unit for integrated dive masks |
| Manufacturer SKU | OR033155 |
| Dealer SKU | OCRE-OR033155 |
| Barcode | 764500013730 |
| Channels | One channel with 2 modes (normal power / reduced power) |
| Speakers | Two, with volume adjustment |
| Volume levels | 3 |
| Transmission modes | Push-to-talk (PTT) and DAT hands-free |
| Microphone | Blue Mic on 2020 units; D-mic 2.0 swappable |
| Battery | Rechargeable, changeable |
| Battery life | Approximately 30 hours |
| Charging | Standard micro USB cable |
| Design | Foldable, stays on the mask |
| Mask requirement | Ocean Reef IDM equipped with an Extender Frame |
| Cross compatibility | All prior Ocean Reef UW wireless units and competitor units on the same channel |
| Color | Black |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
How does the Ocean Reef GSM Mercury underwater communication unit work?
The GSM Mercury is a digital wireless underwater voice communicator that mounts to an Ocean Reef full-face mask like the Neptune III (via the mask's Extender Frame). It uses push-to-talk to transmit and receives continuously, with two speakers at three volume levels and a hydrophobic microphone. Range is up to about 250 meters (800 feet), the unit is rated to 40 meters, and the rechargeable battery gives about 25 hours of use per charge via micro-USB.
What is the difference between the GSM Mercury and the GSM Mercury Dual Power?
They are the same communication unit with different channel setups. The standard GSM Mercury has two fixed frequency channels. The Dual Power version instead runs a single channel with two selectable power levels — normal power for full range, and a reduced-power mode intended for close-range use like training groups — and is identified by its Dual Power label. Both mount to and are optimized for Ocean Reef Neptune-series full-face masks.
How long does the GSM Mercury Dual Power battery last and how is it charged?
The GSM Mercury Dual Power uses a rechargeable, changeable battery with an autonomy of approximately 30 hours. It charges with a standard micro USB cable, so no proprietary charger is needed. Because the battery is changeable, it can be replaced rather than servicing the whole unit.
What mask do I need to mount the GSM Mercury Dual Power on?
It can be assembled only on Ocean Reef integrated dive masks (IDMs) that are equipped with an Extender Frame. The Extender Frame is the mask component required to accept the communication unit. If you are not sure whether your Ocean Reef IDM already has one, contact us before ordering and we will confirm what your mask needs.
Will the GSM Mercury Dual Power talk to other brands of underwater comm units?
Yes. Ocean Reef states the unit is compatible with all prior Ocean Reef underwater wireless units and with competitor units operating on the same frequency and channel. Divers on mixed equipment can therefore share one channel, as long as everyone is on the matching frequency. Reduced power mode is intended to keep sound clear in confined water such as pools and tanks.
Does the GSM Mercury Dual Power work hands-free?
Yes. It includes DAT, Digital Activation Transmission, a hands-free mode that transmits your voice without holding a button, which is useful when both hands are busy with a camera, tools or a student. The unit also has an easy, solid push-to-talk button for times when you want manual control of when you transmit. Two speakers with 3 level volume handle receive audio.
Review summary
Reviewers agree the unit fits easily and feels light, and several say being able to talk underwater is the main reason they would buy it. The comm unit draws mixed notes. Sound quality is described as workable rather than crisp, and buyers report pools need the reduced power channel. Good fit for divers who want surface and buddy communication and value reliable underwater talk more than studio audio.
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