Héron Marinor MkII: Review of the Updated Dive Model

The Montreal-based brand Héron achieved significant success with its Marinor dive watch model.

This model not only became a bestseller but also led to several collaborations and limited editions, the opening of a showroom, and an expansion of staff and production capabilities. Héron decided to give Marinor more time and attention, so the model was temporarily discontinued for nearly a year of improvements. Combining vintage design with modern technical solutions that enhance reliability, comfort, and functionality, why change a proven formula? Nonetheless, Héron deemed it necessary to make refinements, preserving all the best features.

Case: Tradition and Enhanced Ergonomics

The Marinor MkII retains its 39mm case diameter made of hardened stainless steel 1200HV, but some parameters have been optimized:

• The lug-to-lug length has been reduced from 47mm to 46mm.
• The case thickness has been reduced from 12.9mm (including the domed sapphire crystal) to 12.2mm.
• Without the crystal, the thickness decreased from 11.3mm to 10.6mm.

The reduction in case length improves wrist fit, while the reduced thickness enhances comfort, especially when worn under long-sleeve shirts.

The unidirectional rotating bezel with 120 clicks features a luminescent insert protected by domed sapphire glass. The large, knurled edge provides a comfortable grip and easy rotation. The screw-down case back is engraved with a captain with a pipe, and the screw-down crown with a fluted edge is designed like a wooden ship's wheel with a North Star logo in the center. The case is mostly matte with a narrow polished bevel on the outer side of the lugs.

The inner side of the case back is decorated with a perlage finish, highlighting attention to detail, even though this part remains unseen by the owner. Water resistance has been reduced from 300 to 250 meters, which is a reasonable compromise to enhance wearing comfort while maintaining true dive watch status.

Dial: Clarity and Enhanced Legibility

In the second generation of Marinor, the dial has become more concise due to the removal of the logo at the 12 o'clock mark, retaining only the textual logo Héron. The proportions of the elements have been revised for a more balanced visual perception.

The amount of luminescent coating on the dial and bezel has been increased, making the watch a bright light show in the dark. At the 12 o'clock mark remains a volumetric index in the shape of a North Star, the five-minute markers are applied circles, and the fifteen-minute markers are rectangular indices. All are filled with either blue Super-LumiNova BGW9 lume or old radium yellow in the Black & Gilt and Rainbow models. The same lume covers the bezel insert.

The hands - a broad arrow hour hand, a baton minute hand, and a lollipop-tipped second hand - are also lumed. At the bottom of the dial is the Marinor model name and 250m water resistance indication.

Five Dial Color Options Available:

• Black & Gilt (black with gold accents)
• Caribbean Blue (light blue)
• Atlantic Blue (dark blue)
• Rainbow (rainbow)
• Menthol Green (mint green)

The Menthol Green model references the captain with a pipe on the case back, adding originality. Rainbow pays homage to vintage divers with decompression scales (in Mido style), where bright colors facilitate data reading. Unlike traditional printed scale models, the Rainbow features a sandwich dial, adding depth to the image.

Movement: Reliability and Compactness

Inside the Héron Marinor is the automatic Miyota 9039 movement:

• 24 jewels
• 42-hour power reserve
• 28,800 vibrations per hour
• Accuracy of -10/+30 seconds per day

The Miyota 9039 is known for its reliability and compact size, making it an optimal choice for compact dive watches.

Bracelet: Comfort and Practicality

The bracelet design with flat matte links remains unchanged, but several improvements have been made:

• The bracelet has been made thinner.
• The double-button clasp has been reduced in thickness, improving the balance of the watch on the wrist.
• The micro-adjustment has been updated: a push-and-glide system is implemented for quick and easy fitting.
• The links are screw-fastened, and the spring bars have a quick-release mechanism, making strap replacement easier.
• The bracelet surface is coated with the same hard coating as the case, protecting against scratches, especially the polished clasp bevel.

Final Assessment: Elegance and Functionality in One Case

In the crowded microbrand dive watch market, standing out is not easy. Thanks to a series of improvements enhancing wearing comfort and a case made of 1200HV hardened steel, the new Marinor represents an elegant watch capable of withstanding serious challenges. Especially in the Rainbow version, Héron succeeds in harmoniously combining utility and vibrant design. With a very attractive price, the model continues the brand's tradition of offering quality watches for reasonable money.

Technical Specifications and Price: Héron Marinor MkII

The new Héron Marinor MkII version combines classic style and modern technology, confirming its status as a reliable and convenient tool for diving and everyday wear.