... FREE 2.Auto switch off after 3 mins 3.Clean Jewelry,watches,eyeglass,CD,etc Watch Ultrasonic Cleaner Welcome to visit ... after about 3 minutes Inner Blue LED lighting. Clean Jewelry, watches, rings, necklace, earrings, diamond. Clean Glasses, sunglasses, contact lens accessories, optical ... start cleaning and the working indication light will be in red. 3. After 3mins, it will finish a cleaning cycle ...