ultrasonic cleaner is a powerful unit that gently cleans your cd,jewelry, eyeglasses and even dentures in minutes! ultrasonic cd cleaner features: new function for cleaning cd,vcd and dvd using just tap water distinct cleaning result cleaning articles to shine like new 3 minutes automatically shut-off compact lid design to reduce the noise available for: vcd,dvd disks,hardware,jewelry,watches,necklaces,earrings,rings,bangles,eyeglasses, sunglasses ,printer ink cartridge, dentures, comb, toothbrush. specifications: ultrasonic frequency 40,000 hz tank material stainless steel sus304 tank capacity 750 ml ( 1 .3pint ) time control 3 minutes automatically shut-off voltage ac 220 ~ 240v, 50 / 60 hz power 40 w tank size 150 x 130 x 50 mm ( l x w x h ) overall size 200 x 175 x 145 mm ( l x w x h ) packing size 259 x 201 x 171 mm ( l x w x h ) n.w 1.0 kg g.w 1.2kg