Fully functional, a very rare vintage antique two tone dial, matched antique hands, runs and alarms very strong. Sometimes makes people think it's an alarm clock. After all, it keeps accurate time, Jumble size measures at 37 mm which was among the big size watch which Alarms as Cricket, very Loud and Crispy, this antique alarm watch is not water resistant. 

Usually, the alarm watch without separate resonance plate has major drawbacks in producing loud and crispy alarms. 

However, this 37 mm size jumble  vintage antique Citizen watch comes with a big (35 mm) independent resonance back plate which is among the biggest and it  is highly sought after.  

Please do your homework on internet to check with the same features watch and compare.  This watch is  among one of the loudest alarm watches and it keeps accurate time.