# Crownless Refined Timepieces Kurono Diver’s Watch Places a 35mm Timepiece Inside a Diving Case By Amy Duong | Published 2026-03-06 | Fashion Source: Trend Hunter, https://www.trendhunter.com/trends/kurono-divers References: [kuronotokyo](http://kuronotokyo.com/)  The [Kurono Diver’s](https://www.trendhunter.com/trends/kurono-tokyo-vermilion-chronograph) watch is a new timepiece from independent Japanese watchmaker Hajime Asaoka that rethinks the architecture of a traditional dive watch. The design centers on a compact 35-millimeter cushion-shaped automatic watch head that can be worn alone for [everyday use](https://www.trendhunter.com/trends/seiko-prospex-1968-heritage-divers-gmt-spb519) or inserted into a larger 46-millimeter stainless-steel diving case when underwater durability is required. This modular structure allows the watch to shift between a dress-style daily watch and a functional diving instrument. A defining feature of the design is the absence of a crown, a component often considered a weak point in dive watches. Instead, the watch relies on the efficiency of its automatic movement once the time is set. When sealed inside the outer case using a dedicated tool, the watch can withstand depths of up to 300 meters, while the outer case also includes a unidirectional bezel with a 60-minute scale for timing dives. The limited release is priced at $2,700 USD and is distributed through a global ballot system. Image Credit: Kurono Tokyo ## Trend Insights (Trend Hunter) - Score: 7.9/10 - Popularity: 86% | Activity: 86% | Freshness: 65% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial, Gen X - Top markets: Europe ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Fashion](https://www.trendhunter.com/fashion) > [Watches](https://www.trendhunter.com/watches) ## Key Themes ### Why This Trend Is Growing - **Modular Luxury Watches:** This approach of interchangeable watch heads and protective outer cases enables personalized form-factor transitions between everyday elegance and specialized functionality, challenging single-purpose product paradigms. - **Crownless Mechanical Design:** By eliminating the traditional crown and relying on sealed automatic movements, designers are reducing mechanical vulnerability and redefining how consumers perceive durability and serviceability in wristwatches. - **Dual-mode Timekeeping:** Compact dress watch modules that transform into certified dive instruments create new expectations for multi-environment performance within a single ownership experience. ### Industries Being Reshaped - **Watchmaking:** Independent and heritage watchmakers can explore hybrid architectures that combine micro-engineering with modular accessories to unlock premium lifecycle value and differentiation. - **Luxury Goods Retail:** Limited-release, ballot-distributed timepieces paired with modular cases present opportunities to reframe scarcity-based commerce and upsell convertible product ecosystems. - **Diving and Marine Equipment:** Integration of compact precision instruments into robust protective housings suggests a pathway to cross-pollinate horology with professional-grade underwater tooling and certification standards. ## Related on Trend Hunter - [Rugged Ski-Focused Smartwatches](https://www.trendhunter.com/trends/trex-ultra.md) - [Folded Timepiece Designs](https://www.trendhunter.com/trends/fold-watch.md) - [Survival Pocket Timepieces](https://www.trendhunter.com/trends/flint.md) - [Retro Dashboard Watches](https://www.trendhunter.com/trends/citizen-x-honda.md) - [Keychain Apple Watch Chargers](https://www.trendhunter.com/trends/scosche-watchit.md) - [Inclusive Tactile Wristwatches](https://www.trendhunter.com/trends/jinkyo-han.md) - [Luxe Scaled Timepieces](https://www.trendhunter.com/trends/cape-cod-mini.md) - [Unified Fitness Trackers](https://www.trendhunter.com/trends/step-union.md) - [Focused Study Timers](https://www.trendhunter.com/trends/studysprint.md)