Armin Strom · Gravity

Strap for Tourbillon Gravity Fire

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter43 mm
ReferenceRG14-TF.M.90
FamilyGravity
MovementArmin Strom caliber ATM13 hours, minutes, small seconds | tourbillon escapement
Year2013
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Gravity RG14-TF.M.90

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Gravity RG14-TF.M.90, seen from the bench

The Armin Strom Gravity is equipped with the in-house ATM13 caliber with tourbillon escapement. The movement offers indication of hours, minutes and small seconds. The RG14-TF.M.90 reference features the tourbillon mechanism prominently displayed on the dial.

Frequently asked questions

What is the lug width of the Armin Strom Gravity RG14-TF.M.90?

The Armin Strom Gravity RG14-TF.M.90 features a 20mm lug width. This measurement represents the distance between the two lug attachment points on the case and is the fundamental parameter for selecting compatible straps. Measuring the lugs is straightforward: remove the original strap and position a ruler between the two attachment points on the case. For the RG14-TF.M.90, the value must be exactly 20mm, with no tolerance margin.

Which strap would you recommend for the Armin Strom Gravity RG14-TF.M.90?

The choice depends on your aesthetic preference. Alligator with vegetable tanning creates an irregular texture that emphasises the technical character of the skeletonised case, whilst vegetable-tanned calf offers sober elegance and ages beautifully. Technical textile NATO straps keep the Gravity versatile and sporty, whilst vulcanised rubber amplifies contemporary styling. All straps must respect the 20mm lug width for a perfect fit.

How do I change the strap on the RG14-TF.M.90?

Strap replacement is a straightforward operation requiring no specialised technical knowledge. Remove the old strap by loosening the lug pins that fix it to the two case attachments. Gently extract the strap. Insert the new 20mm strap by threading the pins through the eyelet holes, ensuring the strap is centred and straight. Tighten the pins uniformly. If you prefer to avoid any risk, a professional watchmaker will complete this task in minutes.

Can I use an aftermarket compatible strap with the RG14-TF.M.90?

Absolutely. A quality aftermarket strap represents a significant upgrade for the RG14-TF.M.90. Artisanal straps crafted from alligator, vegetable-tanned calf or other premium materials offer not only aesthetic superiority to the OEM strap but also unlimited personalisation. It is essential to respect the 20mm lug width and to choose manufacturers that guarantee millimetre-precise tolerances and construction quality consistent with the excellence of the Armin Strom case.

How long does a leather strap for the RG14-TF.M.90 last?

The lifespan of a leather strap depends on the tanning method, usage and maintenance. An alligator or vegetable-tanned calf strap, if regularly maintained and protected from excessive moisture, can last 3-5 years with daily wear, sometimes longer. Vegetable tanning develops a fascinating patina over time. Avoid prolonged exposure to water and humidity, and periodically clean the strap with a soft cloth. Artisanal construction quality guarantees superior longevity.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only