Get your rings, earrings and watches shining again from the comfort of your own home! Magnasonic's 42,000 Hz ultrasonic cleaner creates millions of bubbles that penetrate even the smallest crevices and push out dirt without damaging the surface. The roomy 20 ounce stainless steel tank is ready to accept your jewelry, glasses, dentures and small tools. Just a few minutes and everything sparkles like new! No harsh chemicals, just water and ultrasound. The 5 timer modes and auto shut-off make the process easy and safe.