A Chrono(graph) alarm Swatch is a watch with stop watch function like the chrono, but with a newer technology. The old functions of the chrono are still there, like the time, an eventual date and an eventual tachimeter, but an alarm function has been added. You can see the difference very easily: the chrono alarm has an extra button on the left side. 100 % authentic and brand new, never worn; Fall/winter 1999; Transparent plastic watchcase; Black leather strap; Black dial with working chrono’s; Working battery; Width of case is approximately 39 mm.; No Swatchbox or papers.