Ultrasonic cleaner features: 1: just use tap water to clean 2: outstanding cleaning effect with visible transparent lid 3: 3 minutes automatically shut-off 4: after cleaning, the subjects will be shining Ultrasonic cleaner application: 1: jewelry and watches necklaces, earrings, rings, bracelets, coins, watches straps and bands etc. 2: eye care :glasses, sunglasses, contact lens accessories 3: daily personal care: dentures, combs, toothbrushes, table wares Ultrasonic cleaner 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 220-240v 50/60 hz Ac 110-120v 60 hz Tank size ---155*80*40mm (l*w*h) Exterior size---205*115*90mm (l*w*h) Package size---238*128*165 mm (l*w*h) G.W---0.78 kgs N.W---0.64kgs Packing details: Carton size (12 pcs)----490*410*355mm (l*w*h) Carton weight (12 pcs)----11kgs (gross) Volume weight (12 pcs)----16kg Volume (12 pcs)----0.074 cbm Packing term----12 pcs / carton 20' container----4300 pcs 40' container----9670 pcs