Casio M-321 highly collectible vintage digital "Melody Alarm" watch from 1980

Wonderful watch 

100% working and in great condition 

fully serviced and new battery fitted

The Casio M-321 is a rare, highly collectible vintage digital "Melody Alarm" watch originally released by Casio in 1980. It is famously nicknamed the "Guitar" or "Bass Player's" watch because of the prominent, uniquely stylized guitar graphic printed on its face

• The "Guitar" Graphic: The watch face features a retro graphic of an elongated, three-stringed guitar neck running across the top of the LCD panel. 
• Melody Alarm (Module 82): Powered by Casio's vintage Module 82 quartz movement, it can play multiple distinct musical melodies for alarms and hourly chimes rather than a standard electronic beep. 
• Physical Profile: It features a rectangular, silver-tone base-metal/brass case (approx. 36mm–40mm) paired with a snap-on stainless steel case back and a matching stainless steel link bracelet. [
• Core Functions: Alongside its unique melody features, it includes standard retro digital functions like a 12/24-hour display, a chronograph/stopwatch, a date/calendar display, and a micro-backlight.