Pics are from the device I personally use- the actual device is BRAND NEW!!

Household Jewelry Cleaner Ultrasonic Machine: This ultrasonic cleaner comes with ABS plastic shell, while having great tactile feeling; SUS 304 stainless steel liner provides good corrosion resistance, use any detergent/solution with peace
47KHz Deep Cleaning Technology: With the powerful ultrasonic wave vibration of 47,000Hz, easily removes hard-to-reach stains from your valuables without damaging them; Perfect to clean jewelry, teeth, eyeglasses, earring, watches, diamond
Smart Touch Control (easy to operate): Touch screen enables you to operate ultrasonic cleaner smoothly and easily. Machine adopts 4 selective cleaning modes (120 to 320 s), you can freely decide the cleaning time
Large Volume Tank & Low Noise: 450ml Tank is adequate to thoroughly clean one or more items at once, saving you time and efforts; ultrasonic cleaner provide deep cleaning for a wide range of items
Product Specifications

Liner Capacity: 15.2 oz. (450 ml)
Liner Material: SUS304
Rated Voltage: DC12V
Rated Power: 18W
Adapter: 12V 2A TYPE-C
Frequency: 47kHz
Tank Size: 5.53*2.56*2.16 in(L*W*H)
Product Size: 7.81*3.63*2.48 in(L*W*H)
KRX 450mL Portable Ultrasonic Cleaner
47,000 Hz of ultrasonic energy waves create millions of microscopic cleansing bubbles
Generous 15.2 oz (450mL) capacity
Food-Grade SUS 304 Stainless steel Liner,ABS plastic shell