Ultrasonic frequency: 40,000Hz Material: stainless steel SUS304 Tank capacity: 6.5L Timer: 1-30 minutes, mechanical timer Isolated ... steel made for body, cover, and base Time setting, real time count-down, heating function, temperature control, and live ... : Ultrasonic frequency: 40,000Hz Material: stainless steel SUS304 Tank capacity: 6.5L Timer: 1-30 minutes, mechanical timer Power ...