Fortis Watch Aquatis Marinemaster Chronograph

Fortis Watch Aquatis Marinemaster Chronograph 671.17.41 Si.20

The Fortis Watch Aquatis Marinemaster Chronograph 671.17.41 Si.20 is a Swiss-made watch developed as a high-performance diver chronograph, combining marine durability with precision timing functionality. As part of the Fortis Aquatis collection, this luxury watch reflects Fortis commitment to engineering timepieces capable of performing in extreme environments, including scientific research settings. Its construction emphasises reliability, making it suitable for demanding underwater use.

The dial is configured for clear visibility, featuring luminous elements that ensure readability in low-light and underwater conditions. The chronograph function allows precise measurement of elapsed time, while the rotating bezel provides additional timing capability for diving. The case is constructed for durability, supported by a scratch-resistant sapphire crystal with anti-reflective coating. The strap or bracelet is engineered for secure wear, ensuring stability during active use. This Swiss-made watch delivers consistent performance and resilience.

This Fortis luxury watch is suited to divers and professionals who require a reliable chronograph with strong technical capability. It performs confidently in marine environments while remaining suitable for everyday wear. The Fortis Aquatis Marinemaster Chronograph offers a combination of durability, precision, and functional design.

Free UK Next Day Delivery
We offer free UK next day delivery on all in-stock orders over £75.

• Order before 4pm (Mon–Fri) for same day dispatch
• Delivery typically arrives next working day before 1pm
• Fully insured, tracked and signed-for service
• Priority delivery upgrades available at checkout

Worldwide Shipping
We ship worldwide using trusted, fully tracked and insured courier services.

• Shipping costs calculated at checkout
• Fast international delivery options available
• Secure and insured transit on all orders
• Local duties and taxes may apply upon arrival

30 Day Returns
Shop with confidence with our 30-day returns policy on most items.

• Return or exchange within 30 days of delivery
• Items must be unworn and in original condition
• Includes all packaging, documentation and accessories
• Sale, pre-owned or promotional items may be subject to a 14-day return period

Important Information

• Bespoke, personalised or resized items are non-returnable
• Altered watch bracelets are considered customised
• Returns should be sent via insured, tracked delivery

Spread the cost with a range of trusted payment providers, designed to give you flexibility and complete control.

Shop Pay Instalments

• Split your purchase into 3, 6 or 12 monthly payments
• Know exactly what you’ll pay
• Quick application with no impact to your credit score
• Simple selection at checkout

Offered in partnership with Affirm and subject to status and approval.

PayPal Pay in 3

• Divide your purchase into 3 interest-free payments
• Pay the first instalment today
• Remaining payments taken automatically
• No fees when paid on time

Available on purchases between £20 and £3,000. Subject to eligibility.

Klarna

• Pay in full today
• Pay in 30 days
• Pay in 3 interest-free instalments
• Longer-term finance options available

Klarna options are subject to status. Terms and conditions apply.

Important Information

Payment options are subject to eligibility, status and terms. Missed payments may impact your financial status. UK residents only, 18+.