The complete guide
Why cycle length matters as much as ultrasonic frequency
Most retainer-cleaner comparisons focus on kHz frequency, but cycle length is arguably the more practical spec, especially if you plan to use cleaning tablets. A 5-minute cycle can cut a tablet's dissolving and working time short, leaving some of its cleaning action unused. A dedicated longer mode, like the 15-minute setting here, is built around giving a tablet the time it needs rather than forcing every cleaning method into the same fixed window — worth checking for specifically if tablets are part of your routine rather than an occasional extra.