Selected watch straps and components are made from materials with distinctive character – including leather, rubber, and textiles. They offer exceptional comfort and aesthetic appeal but are more sensitive to external influences than metal.

Avoid contact with moisture, perspiration, and prolonged heat.

Protect the materials from perfume, cosmetics, and chemical substances.

Be mindful of friction with rough surfaces and color-transferring textiles.

Clean surfaces only with a soft, dry, or slightly damp cloth.

Careful handling significantly contributes to preserving the structure and appearance of the watch over the long term

Union Glashütte uses only 316L stainless steel for its cases, bracelets, and clasps. This alloy is characterized by high corrosion resistance, skin compatibility, and durability, providing a reliable foundation for everyday use. At the same time, finely machined and polished surfaces contribute to the watch's distinctive appearance.

While stainless steel remains durable in use, it can—especially polished surfaces—acquire minor marks. To preserve the surface for as long as possible, it is recommended to avoid contact with hard or abrasive materials and to store the watch separately from other objects. After exposure to salt water or chlorine, it should be rinsed with clean water and dried with a soft cloth.

Regular cleaning with a microfiber cloth is sufficient for maintenance; a slightly damp cloth can be used if necessary. Avoid aggressive cleaning agents or abrasive materials. The finest signs of wear can be reduced through professional servicing, thus preserving the original finish for years to come.

The sapphire used by Union Glashütte for its crystals is a white, synthetic sapphire. Thanks to its hardness rating of 9, this crystal can only be scratched by very hard diamond-like substances. Union Glashütte watches only use double-sided anti-reflective sapphire crystals. As there are no reflections on the crystal, the full splendour of the dial is revealed.

Some ladies' watches have a synthetic satin strap, which is far more durable than a natural satin strap.

Carbon fibre is an innovative, high-tech material, which is often used in aerospace engineering. On some models, Union Glashütte finishes the bezels with carbon fibre. To be precise, these fibres have been industrially produced from raw materials that contain carbon; these are then processed into fibre-reinforced plastics. Apart from the unmistakeable 3D structure of carbon fibre, this material is also extremely light and break-resistant.

It is not without reason that diamond is considered the king of the precious stones: it is the hardest natural substance in the world. Raw diamonds are burnished for use in the watchmaking and jewellery industries and are graded in terms of the four "C" criteria: Cut: The cut describes the individual shape of the diamond. The more elaborately and professionally the stone is faceted, the more intensively the light is reflected. Union Glashütte uses brilliant cut diamonds for cases and single cut diamonds for the dial. Colour: At first glance, you might think that all diamonds are white. However, experts differentiate between subtle grades of shading – Union Glashütte uses exclusively Top Wesselton diamonds. Clarity: They are largely invisible to the naked eye, but virtually all diamonds have minute imperfections that an expert with a magnifying glass can detect. Union Glashütte uses diamonds of the prized VSI (very small inclusions) class. Carat: Carat is the unit that indicates the weight of a diamond. One carat equates to 0.2 g. The diamonds used by Union Glashütte have different carat values depending on the model – these can be found in the technical data of the watch in question or in our e-catalogue. Union Glashütte uses solely diamonds that meet the requirements of the Kimberley process, an international certification system for raw diamonds. It is designed to halt the trade of smuggled diamonds – known as "blood diamonds" – that fund warfare.