3K Aquanaut “Hand Grenade” Series — Upgraded Original-Style Movement with Silent Engraving Version
A newly upgraded interpretation focused on refinement, precision finishing, and improved wearing experience.
Key Upgrade Details
Movement Engraving Upgrade
The movement is fully engraved with refined detailing. All markings are deep-etched, clear, and designed to resist wear over time, improving overall visual texture.
Rotor Upgrade (Noise Reduction System)
The automatic rotor is upgraded with a Swiss high-precision bearing system. The rotor installation process has been redesigned for improved stability and significantly reduced operational noise, aiming for near-silent performance.
Movement Structure
Uses a fully developed 3.3mm ultra-thin Cal.324SC-style architecture with:
No decorative fake plates ;No non-functional balance wheel parts ;No simulated ruby settings
It focuses on structural integrity and realistic mechanical layout.
Dial Upgrade
Arabic numeral hour markers feature enhanced luminous coating, with improved brightness consistency and balanced overall glow across the dial.
Strap Upgrade
Upgraded imported rubber strap offering improved comfort and durability. Designed to withstand extreme temperature conditions while maintaining resistance to corrosion, odor, and wear.
Date Window Alignment
Each piece is individually adjusted to ensure the date window is horizontally aligned without tilt or obstruction.
Crown Operation
The crown mechanism has been fine-tuned through multiple iterations to improve smoothness during time-setting and winding operations.
Thickness Optimization
Case thickness reduced to approximately 8.3mm, achieving an ultra-thin profile comparable to original specifications for improved wearing comfort.
Clasp Upgrade
The clasp features improved logo alignment and structural fit, ensuring precise positioning without offset or misalignment.
Overall Impression
A sport-luxury style Aquanaut-inspired watch focused on ultra-thin construction, mechanical refinement, reduced noise performance, and improved ergonomic wearability.




