Multipurpose Ultrasonic Cleaner Compact

Physical specifications: 19 × 7.2 × 7 cm (L×W×H), lightweight, ≤300 mL capacity, PP body and bottom plate. Powered by USB (3.7 V / 2 W), operated via mechanical switch only — no programmable settings or heating elements. Designed for safe, repeatable cleaning of eyeglasses, watches, jewelry, and makeup brushes. Ultrasonic cleaning uses 42 kHz frequency vibrations (implied by standard consumer-grade ultrasonic cleaners of this size and power) to agitate water molecules and create transient micro-bubbles — a process called cavitation. These bubbles implode near surfaces, releasing energy that dislodges contaminants from complex geometries: screw threads on watch backs, grooves in ring bands, gaps between brush bristles, and recesses around spectacle nose pads. Cleaning cycle is fully automatic once started: no timing adjustments required, no monitoring needed. Simply add tap water and a drop of neutral detergent, submerge items, and press the button. Results appear in seconds — fingerprints vanish, oily films lift, and dust particles suspend visibly in water — leaving items visibly brighter and hygienically refreshed. Blue light is present only in variant B (direct insertion type), and serves purely aesthetic or alignment purposes — not cleaning efficacy.