Casio Speed Memory AW-503
This one is pretty flash. Stainless steel, from 1989; originally with a leather strap, as revealed by this British ad (hilariously, the speed subdial on that one is labelled miles per hour on the dial face, but kilometers per hour on the LCD) – the bracelet which came with this example seems like a much nicer match. The module includes a digital tachymeter in the stopwatch, which provides average speed if a lap distance is entered, and stores the time and speed for up to a hundred laps. The timer can be set from one second to twenty-four hours, and offers an auto-repeat option. Three daily alarms round out the functions.
| Attributes | Value |
|---|---|
| Features |
24h, Alarm: multiple, Ana-digi, Animation, Data logging, Date, Hourly chime, Lume, Seconds, Stopwatch, Tachymeter, Timer, Weekday, Year |
| Model | |
| Module | |
| Cell/s | |
| Released | |
| Made in | |
| Case material | |
| Crystal material | |
| Strap material |
Stainless steel |
| Weight |
93g |
| Water resistant | |
| Thickness |
10.2mm, 11.7mm |
| Case size |
42x47mm |
| Lug width | |
| Strap width |
(not original), 15.7/19.7mm |
| Max wrist |
18cm |




