Horological Caliber Engineering

Custom Mechanical Watch OEM & ODM Manufacturing

Turnkey mechanical timepiece engineering for independent watchmakers and luxury labels. We manufacture bespoke automatic and manual-wind wristwatches featuring certified Swiss, Japanese, and specialty mechanical calibers housed in precision-milled cases.

Factory Production Benchmark

  • Caliber Support Sellita SW200/SW300, Miyota 9015/8215, Seiko NH35
  • Beat Rate 21,600 bph to 28,800 bph (High-Beat)
  • Accuracy Calibration 5-Position Regulation (±5 to ±10 sec/day)
  • Case Construction 3-Piece 316L Steel, Titanium, or Bronze
  • Exhibition Back Threaded Sapphire Caseback with O-Ring
  • Custom Oscillating Weight Tungsten or Brass Rotor with Laser Relief
  • Sample Lead Time 25 to 30 Working Days
  • Assembly Standard ISO 14644 Class 10,000 Cleanroom
Manufacturing Scope

Mechanical Architecture Configurations

Choose from core mechanical watch configurations engineered for reliability and horological depth.

Automatic Self-Winding

High-Beat Automatic Watch

Powered by 28,800 bph calibers with bidirectional ball-bearing rotors, customized winding mass, and 42-hour power reserve.

  • Beat Frequency 4 Hz (28,800 vph)
  • Case Profile 10.5 mm to 12.0 mm
  • Rotor Finish Custom PVD or Côtes de Genève
Heritage Manual Wind

Hand-Wound Mechanical Watch

Classic slim mechanical architecture without rotor obstruction, offering pure tactile crown winding and exhibition bridge appreciation.

  • Movement Profile Ultra-slim 3.8 mm caliber
  • Case Thickness Sub-9.0 mm dress profile
  • Power Reserve 48 to 60 Hours
Visual Complication

Openworked & Skeleton Caliber

Bespoke open-worked baseplates and bridges showcasing escapement oscillations and mainspring expansion through twin sapphire crystals.

  • Dial Style Multi-tier skeleton cutouts
  • Bridge Finishing Circular graining & hand anglage
  • Visibility Dual sapphire exhibition
Engineering Precision

Mechanical Watch Engineering Parameters

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

System Sub-Assembly Standard Specifications Premium Options Testing Benchmark
Movement Regulation 3-Position timing (±12 sec/day) 5-Position timing (±5 sec/day, chronometer grade) 48-Hour Witschi timing machine run
Case Sealing Screw-down caseback, dual gaskets (5 ATM) Exhibition sapphire back, helium valve (10 to 30 ATM) 100% dry vacuum & hydrostatic cycle
Oscillating Weight Stock manufacturer rotor with pad print Bespoke tungsten rotor, skeleton relief, PVD plating Rotational torque & centrifugal drop test
Crystal Fitment Single domed sapphire with inner AR Box double-domed sapphire, multi-layer blue AR Pressure compression & thermal shock
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.

Which mechanical movements do you support?

We regularly integrate Sellita SW200-1 and SW300 series, ETA 2824-2 and 2892, Miyota 9015/9039, and Seiko NH35A/NH38 platforms.

Can we supply our own proprietary movements?

Yes. You can ship movements to our assembly facility, or we can source movements directly through authorized distributor agreements.

What is the typical MOQ for mechanical watches?

Standard initial batch orders start at 300 to 500 units per collection, which can be split across dial colorways.

Do you perform water resistance testing on mechanical watches?

Every mechanical watch undergoes both dry vacuum testing and wet hydrostatic chamber testing up to the rated atmosphere.

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