ElectronicsThe Garmin Marq smartwatch displays on-board data in a watch-style display

Hauke Schmidt

 · 18.10.2026

The Marq Diver looks like a mechanical watch, but it is a fully-fledged smartwatch and can even control the autopilot.
Photo: Garmin
With its ceramic bezel and analogue-style dial, the Garmin Marq Diver Gen 3 looks more like a classic diver’s watch than a smartwatch. On a motorboat, it can display data from the chartplotter and operate a compatible autopilot.

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The Marq Diver is one of six models in the new Marq collection. Garmin has designed it for activities both on and under water. For motorboat enthusiasts, the integration with the on-board electronics and the ability to communicate without a connected smartphone are particularly appealing. Although the dial features hands, it is in fact a digital display.

Titanium, ceramic and sapphire crystal

According to Garmin, the case is made of titanium. The manufacturer uses titanium and ceramic for the bezel; the AMOLED touchscreen is protected by sapphire crystal. The materials and the dial give the watch the look and feel of a classic diver’s watch. It remains, however, a digital instrument capable of displaying maps and other data when required.

According to the manufacturer, the Marq Diver weighs 62 grams without the strap and, depending on the model, 86 or 95 grams with the strap. According to Garmin, the strap can be finely adjusted in 15-millimetre increments. Inductive, sealed buttons are designed for use in water; Garmin specifies the maximum diving depth as 40 metres.

Engine speed and autopilot on your wrist

The watch can receive water depth, engine speed and other vessel data from a compatible Garmin chartplotter. This means you can keep an eye on selected readings even when you’re away from the helm. According to the Autopilot app, Garmin’s product description of the Marq Diver change the heading or follow a GPS route. To do this, the watch must be connected to a compatible chartplotter or the GHC 50 autopilot unit. The watch is therefore an additional control option and not a standalone autopilot. Just like a Control via a smartwatch using an additional gateway Another solution demonstrates how this is implemented in other on-board systems.

The Marq Diver also features a virtual starting line, a countdown timer and a turning assistant. For most motorboat owners, these regatta functions are likely to be less important than engine performance and autopilot operation.

Communication and Price

Thanks to built-in inReach technology, it should be possible to send messages and make an SOS emergency call without a connected smartphone. An active subscription is required for this. Satellite and LTE connections are not available everywhere.

Garmin has set the price of the Marq Diver at 3,150 euros. The collection starts at 2,550 euros and is expected to be available from November. Anyone looking primarily for marine functions will find that the The quatix 8 Pro as a marine smartwatch a more affordable alternative, which Garmin lists at 1,049 euros. It can also display data from compatible on-board electronics and supports satellite communication and LTE.

Technical specifications of the Marq Diver

CharacteristicManufacturer's specifications
Case size47 × 47 × 15 mm
Weight95 g with a silicone strap; 86 g with a silicone-rubber strap
DisplayAMOLED touchscreen, 1.4 inches, 454 × 454 pixels
Case, bezel, crystalTitanium; titanium and ceramic; sapphire crystal
Battery life as a smartwatchUp to 18 days; up to seven days with the display left on at all times
Battery life in activity modeUp to 32 hours; up to 16 hours with LiveTrack via LTE
Water resistance and diving depth10 ATM; maximum diving depth 40 metres

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Hauke Schmidt

Hauke Schmidt

Test & Technology editor

Hauke Schmidt was born in Hanau, Hesse, in 1974, but moved to the coast at the age of an Opti and grew up sailing dinghies and tall ships. School and semester breaks were used for extensive Baltic Sea cruises. During and after his oceanography studies in Kiel, he took part in various international research trips to tropical and polar regions. The focus was on ocean currents and their influence on climate change. Eventually he was drawn back to his home coast and to YACHT. He completed a traineeship there and has been working as an editor in the Test & Technology department since 2009. His core tasks include equipment and boat testing, as well as practical topics relating to electronics, seamanship and refits. As a passionate DIY enthusiast, he loves to spend his summers on the water with his family and winters working on his boat

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