A few questions about ultrasonic cleaners. First, is it safe to clean the entire (waterproof) watch in an Ultrasonic Cleaner or should only.the bracelet be submerged. I seem to have heard it both ways on various watch boards such as this one. Also, I remember reading that watches with ceramic components can present additional problems (I have a WAY211c, stainless bracelet), but I was unable to find out why, or find a second source to confirm this. Thanks!