4L’MENTS Strap – Goutte d’Eau Edition, only at didymostraps' shop


Tax included only within the UK
Shipping calculated at checkout.

Bespoke leather strap made exclusively for the ISOTOPE Goutte d’Eau.

You can choose the colour thread and size of your unique strap only at didymostraps.com 

Use the code DIDYMOSTRAPS15%OFF for 15% off. 

A leather reinterpretation of the iconic Marine Nationale strap

Brief introduction

The Marine Nationale strap was born out of necessity for a simple reliable way to hold a watch onto the wrist of the navy soldiers, linked to the Tudor Submariner Snowflake blue dial model.

When delivering the French Navy in the late 50s, Tudor was sending only “heads” and not entire watches, so without the strap. Frogmen and members of the Marine Nationale usually found their own way to create straps, in this case, made from elastic parachute braid and parachute hardware… the icon was created!

Since then, several strap brands adapted or copied the design, using original hardware and parachute elastic nylon or using non-original materials.

It should be pointed out that, in most of the existing designs, the strap is placed under the watch case, giving an extra thickness to the watch.

On the other hand, some customers consider that nylon is not a stylish material for their valuable watches.

Given these important details that could be improved, DidymoStrapS set to work on a design based on Simplicity, Durability, Firmness and Style.

Considering these premises, and inspired by the energy of the 4 elements of nature, the 4L’MENTS strap was created and adapted exclusively for your Isotope Goutte d’Eau.

Note that this bespoke strap is hand-made and shipped from Barcelona, Spain, with genuine full-grain vegetable-tanned leather from Tuscany, Italy.

Match the thread with the dial version and size your bespoke strap to your wrist only at didymostraps.com

Use the code DIDYMOSTRAPS15%OFF for 15% off. 

Ordering from and outside the U.K.

If you’re not based in the U.K. you'll probably need to pay import tax/duty when buying a watch (or any product) from Isotope Watches and other U.K.-based brands

Brexit changed the rules and since the 1st of January 2021, this also includes all countries within the European Community.

Prices within the U.K.

For customers in the U.K., all watches/products are priced including 20% of U.K. VAT.

As an example, if our watch is priced at £1,000, U.K. customers will need to pay £1,200 (£1,000 + £200 (20% VAT)

Prices outside the U.K.

For customers based outside the U.K., all watches/products are priced excluding U.K. VAT.

Your IP address will determine the prices you see on our website, but if for any reason you see prices including U.K. VAT, the prices will be updated at checkout, depending on your shipping address.

Isotope Watches Limited will not charge VAT when exporting, but you will certainly be asked to pay import duty and/or tax/VAT by your customs country.

How to pay for import duty/tax

We ship most of our products/watches via DHL Express. As per customs request, DHL will calculate the duty and taxes and they will collect the payment on behalf of your country's customs.

Neither Isotope Watches Limited nor DHL has control or profit over these costs/taxes.

How much do I need to pay in duty/tax to receive my watch?

It depends on the country you are based in.

Please see the examples below based on a £1,000 watch. These values are only a reference as they vary depending on the watch cost, and they might not be updated.


Within the U.K.

20% tax (GBP 200), is included in the price.

0% duty (GBP 0.00) + 0% DHL's handling fee


European Comunity Countries

Approx. 15%-24% tax (GBP 150 – GBP 240)

0% duty (GBP 0.00) + DHL's handling fee



10% tax (GBP 100)

0% duty (GBP 0.00) + DHL's handling fee



5% tax (GBP 100)

0% duty (GBP 0) + DHL's handling fee



5% tax (GBP 50)

8% duty (GBP 80) + DHL's handling fee



13% Tax (GBP 130)

20% Duty (GBP 200) + DHL's handling fee



10% tax (GBP 100)

5% duty (GBP 50) + DHL's handling fee


South Africa

15% Tax (GBP 150)

0% Duty (GBP 0) + DHL's handling fee


United Arab Emirates

5% tax (GBP 50)

5% duty (GBP 50) + DHL's handling fee


If you have any questions, please don't hesitate to email us: info@isotopewatches.com

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