The Oris ProPilot Date is part of the brand’s long-established aviation collection designed with precision, clarity, and operational functionality in mind. The model with reference 01 733 7805 4163-07 8 20 04LC represents the latest evolution of the ProPilot series, featuring a 41.00 mm stainless steel case, optimized legibility, an automatic movement, and a series of technical properties suited for daily use and aviation-inspired environments.
The following provides a detailed, structured, and comprehensive information resource on this model, its construction, specifications, variations, and supporting features offered by Oris.
Table of contents
- Design Overview and Case Construction
- Dial Layout and Display Information
- Movement and Mechanical Components
- Bracelet and Strap Specifications
- Water Resistance and Durability
- Aviation-Inspired Features and Functional Purpose
- Partnership With Coulson Aviation
- Technical Specifications Summary
- Variations and Related Models in the ProPilot Line
- Warranty and Ownership Support
- Brand Background and Manufacturing Location
- Store Availability and Service Support
- Conclusion
Design Overview and Case Construction
The Oris ProPilot Date is constructed using a multi-piece stainless steel case, engineered to deliver durability and a distinct functional identity associated with aviation tools.
Key elements of the case include:

- Case Diameter: 41.00 mm
- Material: Multi-piece stainless steel
- Crystal: Sapphire crystal, domed on both sides
- Anti-reflective Coating: Applied on the inside
- Caseback: Screwed stainless steel caseback with see-through mineral glass
- Water Resistance: 10 bar (100 meters)
The case incorporates the collection’s signature turbine-style bezel, which draws inspiration from aircraft engine components and lends the watch its recognizable aviation aesthetic.
The use of sapphire crystal ensures high scratch resistance, while the inner anti-reflective coating reduces glare, supporting clear readability in cockpit-like or bright outdoor conditions.
Dial Layout and Display Information
The model uses a grey dial, designed for clarity and straightforward information delivery. The dial layout focuses on functional timekeeping without additional complications beyond the date.

Dial Features
- Hours, minutes, and central seconds displayed via center-mounted hands
- Date window positioned at 3 o’clock
- High-contrast markers to assist visibility
- Luminous elements for low-light readability
The dial’s minimal text and structured layout ensure the essential timekeeping information remains prominent at all times. Its color tone supports neutral aesthetics, offering compatibility with various strap and bracelet options.
Movement and Mechanical Components
The Oris ProPilot Date houses the Oris Caliber 733-1, an automatic movement built on a reliable mechanical architecture.
Movement Characteristics
- Type: Automatic winding
- Caliber: 733-1
- Power Reserve: Approximately 41 hours
- Frequency: 28,800 A/h (4 Hz)
- Functions:
- Central hours, minutes, and seconds
- Instantaneous date
- Date corrector
- Stop-seconds (hacking)
- Fine timing device
- Dimensions: Diameter Ø 25.60 mm (11 1/2’’’)
The movement supports stable timekeeping performance suitable for daily usage and general aviation-inspired applications.
Bracelet and Strap Specifications

This reference configuration includes a stainless steel bracelet, designed for durability and long-term comfort. The watch is compatible with a range of straps available across the ProPilot collection.
Strap Details
- Material: Stainless steel
- Interhorn Width: 20 mm
- Clasp: Typically fitted with Oris’s aviation-inspired clasp system (depending on specific configuration)
The 20 mm lug width also supports various third-party strap options, including textile, leather, and rubber alternatives, increasing versatility for different environments.
Water Resistance and Durability
The timepiece is rated at 10 bar (100 meters) of water resistance. This level accommodates everyday exposure such as hand washing, rain, and occasional water-related activities.
The use of stainless steel, sapphire crystal, and a solid screw-in caseback contributes to the model’s long-term durability and environmental protection.
Aviation-Inspired Features and Functional Purpose
The Oris ProPilot Date is part of a category of watches designed with aviation principles in mind. While not a dedicated professional-flight instrument, its design incorporates elements aligned with pilot-watch requirements:

Core Aviation-Style Elements
- High legibility: simplified display, large markers, strong contrast
- Functional bezel style: turbine-texture referencing aircraft engine components
- Operational practicality: simple three-hand + date configuration
- Day and night visibility: enhanced by luminous components
The overall design philosophy emphasizes reliability, clarity, and mechanical consistency—core values associated with aviation timekeeping.
Partnership With Coulson Aviation
Oris maintains a collaboration with Coulson Aviation, a globally recognized aerial firefighting organization known for operating advanced aircraft in wildfire management operations.

Why This Partnership Matters
- Aligns with Oris’s aviation heritage
- Demonstrates real-world application of aviation-oriented craftsmanship
- Highlights the brand’s support for organizations using engineering and piloting expertise in service-oriented missions
The partnership does not alter the technical specifications of the ProPilot Date, but it enhances the thematic context and heritage associated with the collection.
Technical Specifications Summary
Below is a consolidated specification sheet for quick reference:
| Category | Details |
|---|---|
| Model Name | Oris ProPilot Date |
| Reference | 01 733 7805 4163-07 8 20 04LC |
| Case | Multi-piece stainless steel |
| Diameter | 41.00 mm |
| Crystal | Sapphire, domed, AR-coated inside |
| Caseback | Stainless steel, see-through mineral glass |
| Water Resistance | 10 bar (100m) |
| Movement | Automatic Oris Caliber 733-1 |
| Power Reserve | 41 hours |
| Frequency | 4 Hz (28,800 A/h) |
| Functions | Hours, minutes, seconds, date |
| Dial | Grey |
| Strap | Stainless steel |
| Warranty | 2 years (extendable to 3 years with MyOris) |
Variations and Related Models in the ProPilot Line
The ProPilot collection includes multiple designs built on the same aviation-inspired platform. Current variations include:
- ProPilot Date (41mm) in several dial and strap options
- ProPilot Desert Edition (41mm)
- ProPilot Date models with textile or leather straps
- Updated ProPilot configurations with additional colorways
These models often share the same core technical specifications but may differ in case finishing, dial texture, color, or strap materials.
Warranty and Ownership Support
The standard warranty for the Oris ProPilot Date is 2 years. However, Oris provides a complimentary warranty extension for customers who register with MyOris.
Extended Warranty Durations
- 3 years for watches with standard mechanical movements
- 5 or 10 years for Oris Calibre 400 series (not applicable to this reference)
The extended warranty enhances long-term product support and reflects the brand’s confidence in its manufacturing standards.
Brand Background and Manufacturing Location
Oris is an independent Swiss watchmaker based in Hölstein, Switzerland, producing exclusively mechanical watches. The ProPilot collection is part of its broader portfolio, which also includes:
- Aquis (diving watches)
- Divers Sixty-Five
- Big Crown
- ProPilot X
- Artelier
The ProPilot Date fits within Oris’s aviation-focused family, offering a streamlined, functional mechanical timepiece with a clear purpose-driven design.
Store Availability and Service Support
Owners can locate authorized retailers, boutiques, and service centers through the Oris Storefinder.
Services Offered
- Authorized maintenance
- Warranty support
- Strap replacement
- Movement servicing
- Authenticity verification
Oris promotes safe payment, free shipping, and free returns depending on region-specific policies.
Conclusion
The Oris ProPilot Date Reference 01 733 7805 4163-07 8 20 04LC is a 41 mm aviation-inspired mechanical watch built with a stainless steel case, sapphire crystal construction, automatic movement, and clear functional instrumentation. Its specifications focus on durability, clarity, and everyday practicality, supported by Oris’s independent Swiss manufacturing approach.
The model integrates essential features expected from an aviation-oriented timepiece, while offering extended warranty options and compatibility with multiple strap configurations. Through its structured engineering and professional design language, the ProPilot Date remains a significant member of Oris’s pilot-oriented watch family.
Source : https://www.oris.ch/
