UNO 24 – Single-hand 24-hour watch

One-hand watch UNO 24 by BOTTA – The original 24-hour watch

The history of the UNO 24 a 24-hour one-hand watch

An idea continues to evolve.

Discover the evolution of an exceptional watch idea.
The first 24-hour one-hand watch from BOTTA
2008

The first 24-hour one-hand watch from BOTTA

  • Movement: Quartz
  • Case material: Stainless steel
  • Diameter: 40 mm
UNO 24 black edition 24 hour watch
2012

UNO 24 as black edition

  • Movement: Quartz
  • Case material: Stainless steel
  • Diameter: 40 mm
UNO 24 with dial with inward-facing hour numerals
2013

Dial with inward-facing hour numerals

  • Movement: Quartz
  • Case material: Stainless steel
  • Diameter: 40 mm
Introduction 40 mm Tri-Titanium case
2018

Introduction 40 mm Tri-Titanium case

  • Introduction of the 40 mm Tri-Titan case with new case geometry
  • Movement: Quartz
  • Case material: Titanium
  • Diameter: 40 mm
Introduction 45 mm Tri-Titanium case
2019

Introduction 45 mm Tri-Titanium case

  • Introduction of the 45 mm Tri-Titan case with new case and dial geometry
  • Movement: Quartz
  • Case material: Titanium
  • Diameter: 45 mm
UNO 24 automatic
2020

First automatic UNO 24

  • First UNO 24 with an automatic movement and fully screw-fastened case
  • Movement: Automatic
  • Case material: Titanium
  • Diameter: 45 mm
First UNO 24 automatic in 40 mm case
2022

First UNO 24 automatic in 40 mm case

  • Movement: Quartz/Automatic
  • Case material: Titanium
  • Diameter: 40 mm
Limitierte Sonderedition zum 15-jährigen UNO 24 Jubiläum
2023

UNO 24 Edition-15

  • Limited special edition celebrating the 15th anniversary of the UNO 24
  • Movement: Quartz/Automatic
  • Case material: Titanium
  • Diameter: 40 / 45 mm

UNO 24 Your Time
2026

UNO 24 Your Time

  • UNO 24 YourTime with a full-color night half and simplified scale
  • Movement: Quartz/Automatic
  • Case material: Titanium
  • Diameter: 40/45 mm
1986 2026
1986

The UNO 24 - 3d configurator

With our new 3D configurator, the UNO 24 becomes a unique experience even before you wear it for the first time. Directly on your device and without any additional software, you can intuitively create your personal version yourself – from the dial design and case color to the strap option. Rotate the watch in real time, view it from every angle, and zoom in down to the smallest detail. In this way, you can discover the construction, visual impact, and character of the UNO 24 in a surprisingly vivid way. Simply give it a try.

To the UNO 24 - 3d configurator
UNO 24  Your Time 3d view

The UNO 24 - day configurator

With our new daily configurator, not only does the UNO 24 become visible, but also your personal relationship with time. Directly on your device and without any additional software, you can map out your typical daily routine based on a UNO 24 model, a wall clock, or a neutral 24-hour dial. Enter start and end times, assign a color to each activity – and instantly your day takes shape as a colored arc around the dial. Suddenly, time becomes surprisingly clear. Visualize your own daily routine. You may be surprised.

To the UNO 24 - day configurator

UNO 24: The 24-hour single-hand watch – as logically structured as a day on Earth.

A day has 24 hours, not just 12. Following this logic, the UNO 24 displays all hours of the day on its 24-part special scale. Its dial is divided—just like a day on Earth—into a daytime half (top) and a nighttime half (bottom). The hour hand symbolically follows the course of the sun. It begins its rotation at 0:00 in the lower (dark) half, then rises from the night half into the day half at around 6:00 a.m.

At 12:00 noon, it reaches its zenith at the top of the dial, before gradually moving back toward the horizon line in the right quadrant of the dial.

At 18:00, the hand transitions back into the dark half of the dial, eventually reaching the date line—symbolizing the dateline—around 24:00. As it crosses this line, the date display advances to the next day.

A new day begins.
We call this highly analog representation of a day “sun-synchronous.”

Designed in Germany, Handmade in Germany.