Ultrasonic cleaner Ultrasonic cleaning device Ultrasonic device 250ml ultrasonic bath Ultrasonic cleaner 30,000 Hz for glasses jewelry watch 360 Deep CleaningThe frequency for this ultrasonic cleaner is 30kHz. The tiny water bubbles generated by ultrasonic can easily reach to the slit and quickly remove those stubborn stains. The powerful ultrasonic cleaner achieves a 360 all-round deep cleaning without damaging the smooth surface of your items such as glasses, watches, rings, coins, dentures, utensils and chains, especially your jewelry.250ml Rectangular TankThis rectangular ultrasonic cleaner can accommodate your glasses. Coupled with 250ml capacity and detachable top cover, you can also easily put cosmetic brushes, necklaces, watches, toothbrushes and other cleaning items without being restricted by the ultrasonic cleaner shape. Your jewelery will shine again after using the ultrasonic cleaning device.Premium and Safe MaterialThe bottom of the ultrasonic bath is equipped with a silicone strip to be non-slip and reduce noise. No need to go to a professional cleaning shop, this ultrasonic machine can quickly clean your glasses, jewelry, dentures, watches, pacifiers, coins, makeup brushes, dishes, etc. at home. Specifications Color: As shown Material: plastic Size: 164*75mm Capacity: 250ml Powered by: 2 AAA batteries (not included) Cleaning technology: ultrasonic Ultrasonic frequency: 30000 Hz Package list 1 x Ultrasonic Cleaning Machine