Born out of the encounter between silicon*, a mineral with extraordinary properties, and twenty years of scientific research, the Silicium Machinery in TheTimeChanger is the pure essence of innovation made of just one, two, three, four parts that rotate around a single-piece Silicon monolith.

A blend of unique technology which breathes life into an ultra-precise micro-rotor that can control the rotation of two extra-light hands.

Simple, powerful, pure, raw, essential.

* see : Silicon or Silicium ?

If silicon has been largely democratized in the recent years across technologies industries; SilMach decided to stay true to the silicon origin and history, and payed a tribute to the British chemist Humphry Davy who was the first to highlight the extraordinary chemical element and gave it a name inherited from the latin word silicis (silex): silicium.

1088 is the number of “silicium cores” engraved on a single silicon wafer.

This watch, powered by Silicium Machinery, works by using a quartz time base to generate an electric pulse at a consistent frequency. This regular pulse is then transformed into mechanical movement thanks to a microcontroller and an application-specific integrated circuit (ASIC) developed by SilMach that sends electric signals to the Silicium Machinery to make it pulsate. This means that the watch can guarantee the utmost precision in timekeeping.

TheTimeChanger watch is up to ten times more accurate than the COSC precision standards with a variation of +/- 0.5 seconds per day.

To change the battery, remove the back cover of the watch using a suitable tool, take out the old battery, insert a new battery of the same kind, making sure to insert it in the same way, then gently clip the cover back on.

We recommend having this procedure done by a watchmaker who has the necessary tools and knowledge to not damage your watch.

We recommend that you place your used battery in the appropriate recycling bin to give it a second life. As well, please do not burn the battery and do not recharge the battery (primary battery). Keep batteries out of the reach of children.

No, the watch is powered by a battery that provides the necessary energy for movement.

The lifespan of one battery in the watch is over ten years (depending on usage and storage conditions). Excessive use of hidden functions could reduce battery life.

If a watch suddenly runs slow, this could mean that the battery autonomy is running low. It is advisable to replace the battery if you notice that your watch is running slow or stops. In case of persistent malfunction, contact our after-sales service.

TheTimeChanger is water resistant up to depths of 50 meters (5ATM). This means that it is also splash-proof when washing hands and resistant to being immersed in shallow water.

Warning: when the watch is underwater, you must not press the push-buttons since it might cease to be water-tight, and your watch may be damaged.

The straps supplied with TheTimeChanger watch are made out of leather. As such, you should avoid them coming into contact with water to prevent the straps from deteriorating.

We recommend avoiding all kinds of repetitive impacts or any other type of intense stress on the watch as this may damage the casing or the mechanisms.

Yes, you can set the hour, minutes and seconds on TheTimeChanger.

Please see the user manual (available for download below) to find specific instructions.

The Silicium Machinery in our watch is produced by SilMach in Besançon, France in a cleanroom environment, which guarantees the utmost precision and cleanliness.

All of the other components of TheTimeChanger are also made in Besançon, France.

The straps are made at the Jean Rousseau workshop, a prestigious strap maker, at their Pelousey site in France.

To clean TheTimeChanger, please take a microfibre cloth dampened with soapy water and wipe it along the surfaces of the casing, the buttons, the watch glass and the straps on TheTimeChanger. Please make sure to dry off the watch and the straps after cleaning using a dry microfibre cloth.

The straps are made with natural leather. Each strap has a unique grain and veining. Over time, the leather of your strap will form a patina and evolve into a strap that will reflect your personality.

Thus, you can clean your strap at the same time as your case, respecting the instructions. We recommend not doing this step too frequently at the risk of degrading the quality of the leathers, and not attempting to clean the strap with alcohol or ethanol, as this could seriously damage it.

The mechanism does not require any specific maintenance. It will only be necessary to change the battery when the time comes to give it new life.

TheTimeChanger casing and straps can be sporadically serviced to improve their appearance.

TheTimeChanger has a 3-year guarantee that starts on the day it was sent.

This covers defects in materials and workmanship existing at the time of delivery of your watch by us.

During the warranty period, and upon presentation of the documents relating to the purchase, the support by our after-sales service is free of charge.

The warranty does not cover:

  • The duration of the battery;
  • Normal wear and tear and aging (such as scratches on glass; alteration of the color and/or material of the strap; crumbling of the veneer; etc.);
  • Damage to any part of the watch resulting from improper use, lack of care, negligence, accidents (knocks, dents, crushing, glass breakage, etc.), or improper use of the watch as well as failure to observe the instructions for use provided;
  • Indirect or consequential damages of any kind resulting from the use, non-functioning, defects or inaccuracy of your watch;
  • Handling by an unauthorized person (e.g. for battery replacement, services or repairs) or whose original condition has been altered beyond SilMach’s control.

The after-sales service is insured for a period of 5 years at the end of the warranty. Out of warranty, the cost of repairs will be communicated to you after diagnosis by our technical experts.

Do you have any queries about how TheTimeChanger works? Are you having difficulties while using it? Please fill out the form on our contact page and select “Customer Service” from the drop-down menu.

The watch is currently available in Europe, Switzerland, the United Kingdom, the United States and Japan.

If your country doesn’t appear on the above list, please don’t hesitate to send us a message using the ‘Contact’ section on our website.

Shipping costs will be listed when you enter your delivery address in your order. Shipping costs can range from €30 to €60 depending on the delivery address.

Returns of SilMach products are subject to the following conditions :


  1. Return Period : Returns are accepted within 14 days from the date of receipt of the product if it meets our criteria set out below.
  2. Product Condition: The product must not have been used, modified or altered in any way. The customer must take care of the Product when examining it. If the Product suffers damage due to excessive use by the User, compensation will be demanded, provided that such damage exceeds what is necessary to examine the Product. The customer’s examination of the product should be limited to handling and inspection identical to the practices of discovering and inspecting a product in-store. In particular, if leather straps are worn even once, they tend to deform and do not return to their original shape. As a result, they will be systematically excluded during quality control if they have been previously worn.
  3. Original Packaging : The product must be returned with its original packaging and the original shipping carton.
  4. Return Request Procedure: All return requests must be made electronically to the contact@thetimechanger.com address. The request must include the order number, the reason for the return, a photograph of the product in its packaging.
  5. Analysis and Authorization : SilMach will review each return request and authorize it if it meets the criteria set out above. If authorized, SilMach will provide the procedure for returning the product as well as the return label.
  6. Product Return: The product must be returned in its original packaging, unworn, and accompanied by all included accessories, in accordance with the return procedure provided by SilMach. The use of the return label provided by SilMach is mandatory. Packages returned directly by Customers to SilMach’s headquarters will not be processed and returned to the Customer at their expense. In the case of a warranty return, the shipping costs will be borne by SilMach. In the event of a withdrawal, these costs will be borne by the customer.
  7. Confirmation of Receipt: Upon receipt of the package, SilMach will send a confirmation of receipt of the product.
  8. Processing of the Request: If the return conditions are met and the request is validated after a quality check, SilMach will contact the customer to proceed with a refund or exchange, according to the terms of the return policy. Otherwise, SilMach reserves the right to demand payment of damages from the Client and/or to waive reimbursement.
  9. Exclusion: It is not possible to make a return on the grounds that a product has benefited from a promotion on the site after its purchase by the Customer.


By accepting SilMach’s general terms and conditions of sale, the customer acknowledges having read and accepted all the terms set out above. These terms may be subject to change, and any changes will be communicated appropriately.


Download the instructions by clicking on the link in the image below.