Welcome to the Sidereus Watches Online Store. Here you'll find links to a selection of Ready-to-Wear watches, Payment Cards and Limited Edition Watches that are made-to-order.


Prêt-à-Porter Watches

Here you'll find a selection of prêt-à-porter watches that are built, regulated and tested and ready to wear. All prêt-à-porter watches are available for immediate dispatch to Ireland and EU countries. For sales outside the EU, please allow at lease three business days for processing of export documentation prior to dispatch.

Prêt-à-Porter
Dowth Date/Time with Greywacke Grey Dial 10/50
Dowth Date/Time with Greywacke Grey Dial 10/50
Dowth Date/Time with Greywacke Grey Dial 10/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Dowth with Grey Dial. Limited Edition 10/50.
€2 350
Prêt-à-Porter
Dowth Date/Time with Greywacke Grey Dial 05/50
Dowth Date/Time with Greywacke Grey Dial 05/50
Dowth Date/Time with Greywacke Grey Dial 05/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Dowth with Grey Dial. Limited Edition 05/50.
€2 350
Prêt-à-Porter
Dowth Date/Time with Midnight Black Dial 01/50
Dowth Date/Time with Midnight Black Dial 01/50
Dowth Date/Time with Midnight Black Dial 01/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Dowth with Black Dial. Limited Edition 01/50.
€2 350
Prêt-à-Porter
Dowth Date/Time with Quartz White Dial 25/50
Dowth Date/Time with Quartz White Dial 25/50
Dowth Date/Time with Quartz White Dial 25/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Dowth with White Dial. Limited Edition 25/50.
€2 350
Prêt-à-Porter
Newgrange Date/Time with a Polished Finish and a Midnight Black Dial 20/50
Newgrange Date/Time with a Polished Finish and a Midnight Black Dial 20/50
Newgrange Date/Time with a Polished Finish and a Midnight Black Dial 20/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Newgrange Date/Time, polished finish with a Midnight Black dial. Limited Edition 20/50.
€2 350
Prêt-à-Porter
Newgrange Date/Time with a Brushed Finish and a Greywacke Grey Dial 10/50
Newgrange Date/Time with a Brushed Finish and a Greywacke Grey Dial 10/50
Newgrange Date/Time with a Brushed Finish and a Greywacke Grey Dial 10/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Newgrange Date/Time, brushed finish with a Greywacke Grey dial. Limited Edition 10/50.
€2 350
Prêt-à-Porter
Newgrange Date/Time with a Polished Finish and a Quartzite White Dial 50/50
Newgrange Date/Time with a Polished Finish and a Quartzite White Dial 50/50
Newgrange Date/Time with a Polished Finish and a Quartzite White Dial 50/50
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Newgrange Date/Time, Polished finish with a Quartz White dial. Limited Edition 50/50.
€2 350

Made-to-Order Watches

Limited Edition of 50
Knowth Date/Time
Knowth Date/Time
Knowth Date/Time
Ex VAT/Duty (For UK and EU countries VAT is added at Checkout).
€2 350
Limited Edition of 50
Dowth Date/Time
Dowth Date/Time
Dowth Date/Time
Ex VAT (For UK and EU countries VAT is added at Checkout).
€2 350
Limited Edition of 50
Newgrange Date/Time
Newgrange Date/Time
Newgrange Date/Time
Ex VAT (For EU countries VAT is added at Checkout).
€2 350
Limited Edition of 50
Newgrange Moon Phase
Newgrange Moon Phase
Newgrange Moon Phase
Ex VAT (For EU countries and the United Kingdom VAT is added at Checkout).
€2 600

Bespoke Watches

Cosmic Quartet features four meticulously crafted Reserve Edition watches, each bearing a distinct dial and case combinations reflective of our earth, our moon and more remote celestial elements.

Inspired by over 5,000 years of Irish horological heritage, the foursome pays homage to our own planet, and celestial bodies that have guided humanity's understanding of time and other heavenly bodies that continue to intrigue modern day astronomers.




Sold Out
Grey Moon
Grey Moon
Grey Moon
Only one available.
€3 000
Reserve Edition 09/50
Blue Planet
Blue Planet
Blue Planet
Reserve Edition, only one available. Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout).
€3 000
Reserve Edition 09/50
Amber Nebula
Amber Nebula
Amber Nebula
Only one available. Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout).
€3 100
Reserve Edition 09/50
Dark Star
Dark Star
Dark Star
Only one available. Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout).
€3 100

Straps and Buckles

Standard Quality
Standard Strap Assorted Colours
Standard Strap Assorted Colours
Standard Strap Assorted Colours
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout). Standard Calf Leather Strap (without pin buckle)
€75
Superior Quality
Superior Dexter Leather Strap
Superior Dexter Leather Strap
Superior Dexter Leather Strap
Superior Donegal Tweed Strap (without pin buckle)
€120
Branded Sidereus Pin Buckle
Branded Sidereus Pin Buckle
Branded Sidereus Pin Buckle
Ex VAT/Taxes (For UK and EU countries VAT is added at Checkout).
€50

Payment Cards

Payment Cards may be used to pay a deposit or towards payment for a watch or strap.