Product Description Features: Just use tap water to clean Outstanding cleaning effect with visible transparent lid 3 minutes automatically shut-off After cleaning, the subjects will be shining Application: Jewelry and Watches, Necklaces, Earrings, Rings, Bracelets, Coins, Watches Straps and Bands etc. Eye Care: Glasses, Sunglasses, Contact Lens Accessories. Daily Personal Care: Dentures, Combs, Toothbrushes, Table Wares. Specification: Ultrasonic Power: 35 W Tank material: Stainless steel SUS304 Frequency: 40, 000 Hz Tank size: 400 ml Time control: 3 minutes automatically shut-off Voltage: AC 110-120 V 60 Hz AC 220-240 V 50/60 Hz Tank size: 155*80*40mm (L*W*H) Exterior size: 205*115*90mm (L*W*H) Package size: 238*128*165mm (L*W*H) G. W: 0.75 kgs N. W: 0.65 kgs