Kinetic Self-Winding Engineering

Custom Automatic Watch OEM & ODM Manufacturing

Premium self-winding mechanical watch manufacturing powered by natural wrist motion. We engineer bespoke automatic timepieces utilizing high-efficiency oscillating weights, bi-directional winding gears, and exhibition sapphire casebacks.

Factory Production Benchmark

  • Supported Calibers Miyota 9015/9039, Seiko NH35A, Sellita SW200-1
  • Winding Mechanism Ball-Bearing Bidirectional / Unidirectional Rotor
  • Power Reserve 40 to 44 Hours Autonomy
  • Accuracy Regulation 5-Position Witschi Calibration (±7 sec/day)
  • Rotor Customization Laser Relief, Skeletonized Tungsten, PVD Plating
  • Crystal Assembly Scratch-Proof Synthetic Sapphire (Mohs 9)
  • Sample Lead Time 25 to 30 Working Days
  • Production Standard ISO 14644 Class 10,000 Cleanroom Assembled
Manufacturing Scope

Automatic Watch Platforms

Engineered for reliable kinetic energy capture and chronometric precision.

Slim High-Beat

Premium 28,800 BPH Automatic

Featuring Japanese Miyota 9000-series or Swiss Sellita calibers with smooth 8-beats-per-second sweep and slim sub-10.5 mm case profiles.

  • Movement Profile Ultra-thin 3.9 mm automatic caliber
  • Vibration Rate 28,800 bph (4 Hz)
  • Sweep Smoothness Fluid 8-ticks-per-second motion
Tool & Field Duty

Workhorse Robust Automatic

Engineered around proven Seiko NH-series movements with proprietary shock absorber systems, hacking seconds, and robust hand winding.

  • Caliber Seiko NH35A / NH38 No-Date
  • Shock Protection Diashock horological suspension
  • Power Reserve 41 Hours nominal
Exhibition Architecture

Custom Rotor Showcase Automatic

Features heavy tungsten oscillating weights custom-machined with your brand emblem, skeleton cutouts, and dual-tone PVD finishes.

  • Rotor Material High-density tungsten alloy
  • Caseback Flush exhibition sapphire crystal
  • Engraving Deep micro-laser relief hallmarking
Engineering Precision

Automatic Watch Mechanical Calibration

Strict dimensional benchmarks, alloy specifications, and verification methodologies applied to every manufacturing run.

Testing Parameter Factory Baseline Standard Enhanced Chronometer Spec Equipment Utilized
Rate Deviation ±15 to ±20 sec/day ±5 to ±8 sec/day Witschi Chronoscope S1 digital analyzer
Isochronism Variation Under 15 seconds across 24 hours Under 8 seconds across 24 hours Dual-cycle 24-hour resting rate check
Beat Error Under 0.6 milliseconds Under 0.2 milliseconds Escapement acoustic impulse sensor
Auto-Winding Efficiency Full wind attained in 800 cyclotest turns Accelerated wind in 600 turns Multi-arm automated cyclotest machine
Manufacturing Protocol

Precision Production Workflow

From technical CAD validation to cleanroom quality inspection, our engineering workflow ensures strict repeatability.

PHASE 01

Engineering DFM & Blueprints

Our engineers inspect your 3D CAD files or reference samples to optimize wall thicknesses, gasket compression tolerances, and tooling paths. Comprehensive manufacturing blueprints are delivered for review.

PHASE 02

Master Prototyping & Testing

First-article prototypes are machined via 5-axis CNC and assembled in our cleanroom. Each prototype undergoes dimensional verification, dry vacuum and hydrostatic water testing, and hand fitment audits.

PHASE 03

Precision CNC Machining & Finishing

Batch manufacturing utilizes multi-axis Japanese CNC equipment, robotic surface polishing, and master hand-applied satin graining. Components undergo strict optical inspection before movement casing.

PHASE 04

Class 10,000 Cleanroom Assembly & QC

All watch casing and critical sub-assembly takes place in ISO 14644 Class 10,000 cleanrooms to eliminate airborne dust. Every completed piece passes 48-hour mechanical timing and dual pressure tests.

Procurement Guidance

Frequently Asked Questions

Common technical and commercial questions regarding custom horology manufacturing and private label supply.

How does the automatic winding system work in your watches?

A weighted semicircular rotor pivots on ball bearings with every wrist movement, transmitting kinetic energy through reduction gears to wind the mainspring.

Can we customize the oscillating weight (rotor)?

Yes. We machine bespoke rotors from brass or heavy tungsten, incorporating skeleton cutouts, laser reliefs, and specialized PVD coatings.

What is hacking and hand-winding capability?

All our automatic movements include hacking (stopping the second hand when the crown is pulled) and manual crown winding for instant startup.

What quality checks do you perform on assembled automatic watches?

Each watch undergoes 48 hours of mechanical timing tests across 5 positions, cyclotest auto-winding verification, and hydrostatic pressure testing.

Start Your Production Project

Bring Your Horological Vision to Reality

Send us your 3D CAD drawings, component blueprints, or design concepts. Our horological engineers will prepare a comprehensive casing analysis, tooling proposal, and quotation within 24 business hours.

Submit Request for Quotation