- Acrylic Glass -
A synthetic material easily altered at higher temperatures. This glass is resistant to both corrosion and the elements. Scratches to the acrylic glass can be polished out easily.
- Alarm -
An alarm allows users to have a signal sound at a predetermined time.
- Annual Calendar -
A feature allowing users to set the date one time a year. The end of February is usually the time of year this function needs to be performed.
- Automatic -
This term refers to a watch caliber that is automatically wound. The winding of the mainspring is generally done by the arm or wrist of the wearer. In order to protect the watch from too much tension, a slipping clutch is used. The main rotor in the watch is also very widespread to avoid damage.