What does a 30 bar (300 meters) rating really tell you about a dive watch? To truly understand the implications of this rating, one must consult the accompanying construction and care guidance for each timepiece, and then observe its expression on a specific model's product page, for instance, on the Shanghai Watch website.
Start with the 30 bar rating
The 114 Military Black 37.5mm is listed with 30 bar, or approximately 300 m, water resistance. Bar and meters present the same published pressure-resistance rating in different forms. The meter figure is a practical shorthand for pressure, so read it as a specification of the watch rather than a literal invitation to descend 300 meters.
While "waterproof" may appear in marketplace descriptions, Shanghai Watch opts for "water resistance" to ensure clarity and accuracy, adhering to industry standards such as ISO 22810. (ISO 22810 water-resistant watch standard )
The rating is only the first detail to read. The crown, caseback, crystal, bezel, and seals complete the picture.
The 114 Military Black pairs its 30 bar rating with a 37.5 mm 316L stainless-steel case, solid stainless-steel caseback, and screw-down crown. Its unidirectional titanium bezel and domed sapphire crystal complete a purposeful, well-resolved case design.
Wedge-shaped hour markers, hands, and bezel markings use Super-LumiNova for legibility in low light. The black sunray dial includes a date display. Inside, the ST2130 automatic movement provides hours, minutes, seconds, and date functions, with 28 jewels, a frequency of 28,800 vibrations per hour, and approximately 42 hours of power reserve.
A 30 bar specification gives the 114 Military a confident foundation for active daily wear. Before water exposure, secure the crown and check the case and crystal after any impact. For swimming, boating, or time by the coast, follow the current instructions for the exact model.
Keep the crown and date-setting mechanism untouched while the watch is wet unless the model instructions expressly allow otherwise. If you see fogging beneath the crystal, notice crown damage, or observe a change in normal operation, stop water exposure and contact Shanghai Watch. Its automatic watch service guide explains why maintenance depends on movement, use, environment, and condition.
Care for the watch after water use
When the product instructions permit water contact, rinse away salt, chlorine, and sand with clean fresh water. Dry the case, bracelet, clasp, and crown area with a soft cloth. Let the supplied black nylon-leather strap dry fully before storage, and wipe the additional gunmetal stainless-steel bracelet after exposure. Each material deserves its own care, while the published 30 bar rating remains the same.
A friendly reminder about your 300m water resistance
On a Shanghai Watch specification page, 300 m is best understood alongside the exact reference, the construction that supports it, and the habits that preserve it. Read those details in sequence, keep the crown secured, and follow the model's instructions. That is how the 30 bar marking becomes practical knowledge for wearing the 114 Military with confidence.
