Is this any good for cleaning greasy eyeglasses?

A couple reviews were misleading. Here's the guidance straight from the manual on this question and it was bolded: "ATTENTION: - Glasses / Sunglasses with pre-existing scratches or cracks in the coating are not suitable for ultrasonic cleaning. Ultrasonic cleaning is only suitable for cleaning frames. - Antique jewelry, jewelry containing loose stones, and jewelry containing soft / porous stones like pearls, emeralds, amber and opal should not be cleaned in the ultrasonic cleaner. If you are unsure about whether you should use the ultrasonic cleaner on your specific type of jewelry, please consult your local jeweler." I ruined a pair of glasses. If you have even the slightest, think almost invisible, crack in the coating or a break in it where the lenses meet the frames (very hard to detect), the ultrasonic cleaner will vigorously attack these defects and start to strip away the entire coating, thereby trashing your glasses. If your lenses are COATED with anything, follow the manufacturer's advice and do not use an ultrasonic cleaner.

The manual calls "to celan watches with less than 30 mts of watterproof depth " does this mean that if I have a 50 mts it is not suitable?

The short answer is that regardless of the mis-worded/backwards instructions in the manual, you should never ever submerge any watch in an ultrasonic cleaner, period. The entire purpose of the ultrasonic cleaner is to aggressively drive water into the tiniest of crevices to clean out debris. The sealing gaskets for watches are not designed with ultrasonic cleaners in mind. Even diving watches are not tested against such aggressive environments. The ratings on non-diving watches are for brief submersions in static environments when brand new. With age the o-rings degrade. The seal around the stem isn't very tight to start with, and after a battery change the seal for the back is rarely very robust. No watch maker is likely to endorse using an ultrasonic cleaner on their watch. For more info on what the rating on the watch means, look at: https://en.wikipedia.org/wiki/Water_Resistant_mark

What are 5 preset cleaning cycles?

Preset cleaning cycles is a fancy term for how many seconds the machine is set to run - 90, 180, 280, 380 and 480 seconds.

anyone have a solution that they think i should use for this for best answers

I use Simple Green or Fast Orange combined with warm (not hot) water in a 50/50 ration. This works best (for me) over any other cleaning solution combo for jewelry. I then rinse in clean water and use a can of compressed air (the kind you use for computer keyboards) to blow dry diamonds and give it that extra sparkle.

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✨ Elevate your shine game with ultrasonic precision! ⚡

VERSATILE MULTI ITEM CARE - Perfect for jewelry, watches, eyeglasses, coins, dentures, and more
CUSTOMIZABLE DIGITAL TIMER - Choose from 90 to 480 seconds for precision cleaning with auto shut-off
SPACIOUS STAINLESS STEEL TANK - Generous 600ml capacity fits multiple items for efficient batch cleaning
DEEP CLEANING ULTRASONIC POWER - 42,000 Hz sound waves blast dirt from the tiniest crevices without damage
ECO FRIENDLY TAP WATER CLEANING - No harsh chemicals—safe for your valuables and the planet

The Magnasonic MGUC500 Professional Ultrasonic Jewelry Cleaner uses powerful 42,000 Hz ultrasonic waves to remove dirt and grime from jewelry, watches, glasses, and more in minutes. Featuring a large 600ml stainless steel tank and a digital timer with five preset cleaning cycles, it offers customizable, eco-friendly cleaning using only tap water—no harsh chemicals needed. Ideal for busy professionals who demand spotless accessories without the hassle.

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TrustScore 4.5 | 7,300+ reviews

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Brand	Magnasonic
Manufacturer	Magnasonic
Model number	MGUC500
Colour	Grey / White
Item Weight	998 g
Product Dimensions	20.83 x 14.73 x 13.72 cm; 997.9 g
Item model number	MGUC500
Item Height	5.4 Inches
Item Width	5.8 Inches
Voltage	127
Are batteries included?	No

Magnasonic Professional Ultrasonic Polishing Jewelry Cleaner with Digital Timer for Cleaning Eyeglasses, Watches, Rings, Necklaces, Coins, Razors, Dentures, Combs, Tools, Parts, Instruments (MGUC500)

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