Modern hand-operated stop watches are quartz-controlled electronic watches that start and stop a time interval measurement with the press of a button.
List of approved devices (as of July 2016):
| Zulassungsinhaber | Adresse | Typenbezeichnung / Zulassungszeichen |
| Adolf Hanhart GmbH & Co. KG | Hauptstraße 33 78148 Gütenbach | PROFIL 1 19.2 / 02.01 |