Magnasonic MGUC500 Ultrasonic Cleaner
 
If you're like me, and you purchase used or vintage wrist watches, the Magnasonic MGUC500 Ultrasonic Cleaner is a no brainer purchase. The Magnasonic MGUC500 is a $40 ultrasonic cleaner that absolutely destroys grime, dirt and debris buildup on watch bracelets and jewelry. I highly recommend it.